Is this alternate solar system possible?

silversliver · January 6, 2016

1 hour ago, fredinno said:

TL:DR; Eros needs to be greyer.

insert_name · January 6, 2016

what is Eros's geological makeup, is it a pile of rubble, or mostly solid

fredinno · January 6, 2016

1 hour ago, silversliver said:

Eros is this was supposed to be based of Eros IRLhttps://en.m.wikipedia.org/wiki/433_Eros#/media/File%3AEros_-_PIA02923_(color).jpg

Eros is fine, (you did a good job), but it seems too bright (though this might be due to being closer to the Sun. Could you make it less bright? It has an abnormally high albedo.

silversliver · January 6, 2016

18 minutes ago, fredinno said:

Eros is this was supposed to be based of Eros IRLhttps://en.m.wikipedia.org/wiki/433_Eros#/media/File%3AEros_-_PIA02923_(color).jpg

Eros is fine, (you did a good job), but it seems too bright (though this might be due to being closer to the Sun. Could you make it less bright? It has an abnormally high albedo.

In fact I based on the real Eros.

Fun fact: I discovered the existence of the real Eros because there can't be two bodies with the same name and I wasn't understanding why the editor wasn't accepting the name "Eros". So what you see is actually "Eros2".

The brightness is caused by some problem with the screenshots, so all the bodies you've seen so far have a brightness higher than in-game, where it's more reasonable.

fredinno · January 7, 2016

1 hour ago, silversliver said:

In fact I based on the real Eros.

Fun fact: I discovered the existence of the real Eros because there can't be two bodies with the same name and I wasn't understanding why the editor wasn't accepting the name "Eros". So what you see is actually "Eros2".

The brightness is caused by some problem with the screenshots, so all the bodies you've seen so far have a brightness higher than in-game, where it's more reasonable.

Ah. Well, good job then!

ChrisSpace · January 7, 2016

Quote

Venus (and Eros).

Brilliant work so far! So how much of the solar system have you done by now?

Quote

Eros is this was supposed to be based of Eros IRL

When I was naming the worlds I actually forgot there was a real asteroid named Eros lol. It was actually based off Gilly from KSP.

Edited January 7, 2016 by ChrisSpace

silversliver · January 7, 2016

11 hours ago, ChrisSpace said:

Brilliant work so far! So how much of the solar system have you done by now?

Vulcan

Mercury

Venus (and Eros)

Earth (Moon and Aurora)

Minerva

Jupiter-no moons

Saturn-no moons

Next: Mars (and Ceres)

fredinno · January 7, 2016

3 hours ago, silversliver said:

Vulcan

Mercury

Venus (and Eros)

Earth (Moon and Aurora)

Minerva

Jupiter-no moons

Saturn-no moons

Next: Mars (and Ceres)

Make sure you make Bellona! Also, Ceres has very dim rings.

Findthepin1 · January 7, 2016

Are the continents on your Earth the same?

fredinno · January 7, 2016

27 minutes ago, Findthepin1 said:

Are the continents on your Earth the same?

Yes, It should be.

silversliver · January 7, 2016

2 hours ago, fredinno said:

Make sure you make Bellona!

I have a little problem with this, and it's that I can't find it anymore in this topic, could you link me the post where are its characteristic?

fredinno · January 7, 2016

3 hours ago, silversliver said:

I have a little problem with this, and it's that I can't find it anymore in this topic, could you link me the post where are its characteristic?

I should be in the front post- if not, I should post the V1.5 descriptions today- if things go well. I just have a few adjustments to this alternate history's solar system's trajectory..

ChrisSpace · January 7, 2016

6 hours ago, Findthepin1 said:

Are the continents on your Earth the same?

For simplicity, yes. As is the terrain on most planets that exist IRL.

3 hours ago, silversliver said:

I have a little problem with this, and it's that I can't find it anymore in this topic, could you link me the post where are its characteristic?

I've renamed Bellona to Ceres since they have the exact same physical characteristics. And the Ceres I had before was really unnecessary.

fredinno · January 9, 2016

Finally, the Sol System is complete. I'm not planning on making another one in the immediate future.

I added more s**t in here than it looks. Way more, trust me. This deserves a V2.0.

v In Order of its Distance from SUN v

<Masses of objects are OTL Object masses>

-Sun: (1047.71x Jupiters Mass) Same as IRL. The Sun is the star in the centre of the solar system. Can cause blindness when looked directly at for a long time. STAR

-Vulcan: (0.071x Earths Mass) Vulcan is the closest planet to the Sun, and is a Lava planet. Due to its closeness to the Sun, it is very hot. Vulcan is close enough to the Sun for more than half of the planet to be molten. It is largely composed of dense Iron, metals, and Iron/Metal Compounds on its sun-facing side, as due to its proximity to the Sun, all of the lighter volatiles and silicates characterizing most planets in the Solar System boiled away, at least on its Sun-facing side. The proximity of the planet to the Sun exerts a lot of gravitational energy on Vulcan, making it tidally locked.

Lava oceans cover the Sun-facing side of Vulcan, while (due to heat from the opposite side of the planet moving towards the night side) the night side is dotted with Volcanoes and Lava lakes, puncturing the thin Vulcanian crust. These emit large amounts of Carbon Dioxide and Sulphur into the atmosphere of Vulcan. However, the Sun's powerful solar wind blows away much of the accumulated gases (including silicates and other normally solid material) into space a very high speeds- consequently, from far away, Vulcan looks a little like a comet.

The night side, however, is relatively cold, (compared to the day side) meaning silicates (and under rare circumstances, ices) are present here. Due to this difference in temperature, the atmosphere can condense, form clouds, and solidify on the night side, forming a silicate 'rain'. However, this is uncommon, as these materials are generally blown away by solar wind before it has a chance to precipitate. Vulcan is somewhat larger than Mercury OTL, and like Mercury, lacks a proper magnetosphere. [0.45 G] PLANET (12° Inclination) {0.13 AU} <VULCAN IS DISCOVERED IN ANCIENT TIMES DUE TO ITS TAIL>

-Mercury: (0.055x Earths Mass) Is the same as in OTL. Mercury, as in OTL, contains many valuable minerals, being an “iron planet” composed mostly of metallic material. <A less eccentric orbit means it will be tidally locked.[0.38 G] PLANET (7°) {0.3 AU-0.47 AU}

-Venus: (0.815x Earths Mass) A habitable planet orbiting at a high inclination in resonance with Earth (avoiding high gravitational interactions with it that would sling it out of its orbit.) It has a (somewhat thick) atmosphere, magnetic field and a surface much different from OTL. Despite being habitable for life, it is a very dry desert planet, and lacks animals, as there is not enough water to support the amount of plants needed by animal life (aside from its intelligent species, which we will get to later). The surface water available is concentrated in a few small oasises. The surface terrain is composed of flat plains, and high, volcanic plateaus- most of which merged into one large plateau near the equator where Aphrodite Terra is OTL (these form as Venus lacks the water for tectonic plates). The air has a 17% O2 content (with the rest mostly nitrogen), and the surface temperatures average 40-50° C. This makes the planet uninhabitable for unprotected humans (though the air is breathable for many). Aphrodite Terra contains high concentrations of Uranium-235 for Nuclear weaponry, Gold, and Platinum-Group minerals for mining.

Venus is also one of three places outside Earth that has intelligent life, which is currently a small, feudal, agrarian society. This is strange, as the planet lacks animals. It is thought that these bipedal green animals (Kerbals? XD) were from another star system, before settling in Venus and losing their technology, and their society collapsed. These animals also eat some meat, all of which is produced from domesticated animals. The intelligent life here is very limited in number due to only having a few areas on Venus with enough water to support them. This also limits their technological advancement, though they love and greatly value the technology they DO see and/or obtain (they love rockets, especially, for some reason…)

Oh yeah, and the first man to step foot here was Simon Wolf Edmunds, and thus the first base here was called Edmunds' Step.

[0.9 G] PLANET (40°) {0.8 AU}

-Eros: (0.0000075x Ceres Mass) Venus' only moon, Eros has a very eccentric, somewhat inclined orbit around Venus. It is likely a captured near-Venus asteroid, and being a S-type asteroid, is depleted in volatiles (for refueling), but higher in metals (such as gold), compared to C-type asteroids. Very similar to 433 Eros OTL, it is a very large asteroid to be near Venus, should it return to a Heliocentric Orbit. [Negligible G] MOON (10.8° Inclination to Venus’ Inclination) {0.8 AU}

-Aurora: (0.000000017x Ceres Mass) Moon of Earth, thought to once have been a metal-rich “M-Type Asteroid”, it contains concentrations of platinum-group metals that made it the moon that paved the way for asteroid mining. It is at an inclined, eccentric prograde orbit with Earth-Luna's barycentre- though this orbit is unstable, and the object will likely collide with either Earth or Luna in a few million years due to gravitational interactions between its larger neighbours. Aurora is relatively small, however, it is about the size of 3554 Amun (actually, the two are pretty much the same). It is not tidally locked, however, as Luna's and Earth's gravity are in a “tug of war” with the moon.

A 2.48 Km Diameter moon, if mined (and metals and minerals processed and refined), it is estimated to have a net worth of $20 Trillion (in OTL 2012 Dollars and mineral worth- actual value is likely to be lower due to the flooding of the market with its metals) [Negligible G] MOON (27°) {1 AU}

-Earth: (1x Earths Mass) Same as IRL. Ignoring the effects of tidal locking, due to storyline purposes, it is a binary to Luna. It also is the home world of the most advanced species in the solar system – according to members of said species. [1.0G] PLANET (0°, in relation to Sun (Constant Format used throughout for objects orbiting the Sun)) {1.0AU}

-Luna: (7.05x Moon Mass) Earth’s only moon. It has a magnetosphere (formed by tidal heating), a biosphere and breathable air. It isn’t tidally locked, so ancient astronomers have been able to see both hemispheres. (Yes, I know this isn’t possible in real life, but I’m keeping it this way for the sake of the storyline). Luna is composed of similar material to Earth in OTL, and can be considered Earth's smaller “brother” (it is a little smaller than Mars in OTL). Its atmosphere extends much farther above its surface than Earth's due to its low gravity. It also is slightly cooler than Earth due to a thinner atmosphere. It lacks intelligent life, with the most intelligent creatures being similar to dolphins. [0.34 G] PLANET/MOON (0° Inclination, in relation to planet (Constant Format used throughout for objects orbiting another object)) {1.0AU}

-Phobos (0.000012x Ceres Mass) and Deimos (0.0000016x Ceres Mass): Now binary trailing Earth Asteroid Trojans. Otherwise, same as IRL. Both have similar compositions, and Phobos lacks the stress stripes caused by its proximity to Mars.

A strange “library” containing “monoliths” (Quantum Computers with massive, ultra long-duration hard drives containing huge amounts of unknown data) has been found here, however- one of the greatest mysteries of the Solar System. Humans are still yet to decipher its data, but as computer technology advances, strides are being made to do so. One theory is that it was from a collapsed ancient civilization, explaining why the Martians, Minervians, and Humans from Earth all have similar biologies. [Negligible G] ASTEROIDS (14°) {1 AU} <Moved monoliths here to give you a reason to add Phobos-Deimos to this system>

-Comet 109P/Swift-Tuttle: (0.0069x Ceres Mass) First discovered in 1846, Comet Swift-Tuttle is a periodic comet with an orbital period of 133 years. Though this comet's orbit is stable due to a 1:11 orbital resonance with Jupiter, it passes very close to Earth/Luna-in OTL, it will approach 0.03 AU to Earth.

In this alternate timeline, its orbit is determined to pass a minimum of (0.003 AU) to the Earth-Luna system in 1979- dangerously close. As a result, it generates significant scientific study on the comet's orbit, and how to mitigate a potential impact. As 109P in OTL and IRL have very similar properties, they both have a 26 km nucleus of similar composition- combined with is high-energy orbit, an impact would have 27x greater force than the impactor that cause the Cretaceous-Paleogene Extinction Event.

Two manned spacecraft were sent here to push the comet out of the Earth impact corridor, using a Jupiter flyby to match its inclination- named Freedom and Independence. And no, there were no oil drillers on board. Nor was Micheal Bay around to create moar explosions. [Negligible G] COMET (113.45°) {0.96 AU-51.23 AU}

-Mars: (0.15x Earths Mass) Mars is one of the three places outside of Earth with intelligent life and one of the most complex biospheres in the solar system. It has a proper magnetosphere (due to its large moon causing tidal heating in the core) allowing it to retain a breathable atmosphere and a habitable, but relatively cold climate, due to its distance from the Sun and thinner atmosphere- the polar regions to 40°N and 40°S are in a perpetual ice age. Most of the rest of Mars is composed of the Mars equivalent of Tundra, and Boreal Forest. Additionally, the Tharsis Bulge does not exist- due to plate tectonics. Instead, it is a large plain (like the Midwest) with large shield volcanoes and mountains on its western edge. As the Tharsis Bulge pushed Arabia, on the other side of the planet, up, the plains of Arabia are also underwater. Its intelligent life was not expected to be killed off by Smallpox and Measles shortly after the first manned landing, as the difference between species living on Mars and on Earth is so great- despite this, there was a large kill-off after (unknowingly) tainted goods were traded between Mars' intelligent life. Mars is also slightly larger in size, compared to Mars in OTL. As this planet is largely dry, much drier than Earth (due to low amounts of evaporation from its cold climate), it is considered a cold semi-desert planet by some scientists. It is the most Earth-like planet (aside from Luna), but lacks precious minerals and/or resources and animal biodiversity of Earth (due to less O2 produced from the partially-frozen over planet). Its atmosphere is 20% oxygen and 68% nitrogen (the rest mostly noble gases)- breathable. [0.4 G] PLANET (1°) {1.3 AU}

Bellona: (0.011x Moons Mass) Mars' only moon, about the size of Ceres in OTL and based off Ike in KSP. Bellona and Mars' compositions are similar, having formed from the same material. It is almost in hydrostatic equilibrium (but not quite), so it though it looks round at first glance, it is not completely rounded, like Ceres. [0.05 G] MOON (4°) {1.3 AU}

Minerva: (6x Earth Mass) The largest rocky planet in the solar system. Its high gravity and large magnetic field (due to active volcanism) have let it develop a large, dense atmosphere, which, though similar to Earth's, is unbreathable due to the high concentrations of CO2 (above the human tolerance of 5mm partial pressure of CO2) to humans, but is perfectly suited to the native life, which is adapted to the conditions. Though there are large concentrations of CO2 on this planet (1% of Atmosphere), it is otherwise similar to Earth's Atmosphere. The Greenhouse effect from CO2 and evaporating water (water planet means more vapor) causes this planet to be habitable (at 25° Celsius Average Temperature) despite its distance from the Sun.

Minerva is also one of three places outside of Earth known to have intelligent life, which is not highly advanced (compared to those of Venus, Earth, and Mars, but uses its ability to survive in an atmosphere mostly unsurvivable to humans to its advantage). Minerva is mostly like Laythe in KSP, but with much deeper oceans- as most of the continents are underwater, with only the mountaintops remaining (meaning the land that there is is slanted, and usually not optimal for agriculture). The planet has a very low axial tilt of 1° (though this is thought to have changed significantly over the years, due to a lack of a moon, ranging from a 0-30° axial tilt.) meaning that there are no seasons. This, along with the lack of land, means that civilization is unlikely to advance much farther than basic agriculture without extra help. It contains unusually large concentrations of minerals, such as Silver, Titanium, Zirconium, Gold, and Rare Earths, and the deepest areas, 90 km deep, contain strange, exotic ices, due to their density. (Platinum-Group Metals and Uranium are also available, but at lower concentrations than on Venus.) Of course, extracting these minerals require mining underwater. The atmosphere is very similar to Earth. Minerva also has large reserves of oil and natural gas, due to its oceanic nature. [1.7 G] PLANET (2°) {1.8 AU}

Ceres: (0.013x Moons Mass) Same as in OTL, but in a more inclined orbit. Also is surrounded by a very, faint, young ring (“Dres-troids”), thought to be debris from an asteroid impact that took place a few million years ago. These will likely disappear in another few million years as chunks of it crash into Dres. [0.04 G] DWARF PLANET (15°) {2.97 AU-2.56 AU}

Dres: (0.017x Moons Mass) A Ceres-like protoplanetary object slightly larger than Ceres OTL. It is similar to Dres in KSP 0.90, with large canyons likely formed when the moon underwent thermal expansion. It has a very eccentric orbit. [0.04 G] DWARF PLANET (5°) {2.5 AU-3.1 AU}

Jupiter: (317.8x Earths Mass) A gas giant, Jupiter is also the 2^nd largest planet. It is basically the same as in OTL, but with a very different system of moons. [2.528G] PLANET (1.3°) {5.4 AU-4.95 AU}

Laythe: (9.3x Moons Mass) The closest moon to Jupiter, Laythe is very similar to its version in KSP(but larger)- an ocean moon. However, due to tidal locking, its vast oceans are pushed to the poles, leaving behind the land in islands clustered near the equator. Unfortunately, Laythe's tides are impressive- due to the gravitational forces from Jupiter and Castillo, these tides have more resemblance to tsunamis on Earth than tides, making the land completely useless! (It's for a good reason no probes have landed here yet.) Though the tides hinders complex land life from growing, it has a breathable atmosphere, strong magnetic field (powered by Jupiter's tidal heating of the core) and many diverse aquatic ecosystems.

Additionally, Laythe is very volcanically and tectonically active, spewing CO2, which is absorbed by cyanobacteria- however, these cannot support complex life at the surface, due to the lack of sunlight; all life here is deep-water, making use of thermal vents to survive. Additionally, the oceans are acidic, due to absorbing large amounts of CO2. Due to the lack of land and Sun, Laythe has an unbreathable atmosphere with a mere 5% oxygen, and composed of mostly nitrogen, with significant amounts of CO2 (2%) and Water Vapor. However, the greenhouse gases also makes Laythe an average of 20° Celsius. The moon also lacks a giant impact crater, like Laythe in KSP (as this may have shattered the moon apart). Laythe is between the moons Io and Europa in OTL. Human missions getting here suffer (such as the “MILLER” planetary lander/human precursor sent here, which was quickly consumed by an unexpectedly large swell) due to the radiation belts around Jupiter, that Laythe is protected from, but in the middle of(though some still evaporates, as the low gravity means Laythe's atmosphere extends much farther out than Earth's). Though it has large amount of precious minerals mine-able underwater, Laythe has largely been designated a “no-go” zone for human missions- leading to the famous quote, “All these worlds are yours, except Laythe. Attempt no landings there.” [0.39 G] MOON (0°) {5.4 AU-4.95 AU}

Castillo: (1.46x Moons Mass) The only other major moon of Jupiter, Castillo is much like OTL. It contains a global ocean under its icy crust and mantle, containing primitive bacteria, much like in Antarctica. It is a good staging point for a base, being away from Jupiter's radiation belts, (not to mention useful land, and volatiles to fuel ships). It is somwhat closer in to Jupiter than in OTL, allowing the two moons Laythe and Castillo to form a resonance and stabilize their orbits. Unlike in OTL, however, it did get hot enough during formation to be differentiated. [0.13 G] MOON (2°) {5.4 AU-4.95 AU}

Saturn: (95.16x Earths Mass) A gas giant. Unlike in OTL, it lacks large, noticeable rings- the processes that formed the larger rings did not take place here (though Saturn still has smaller rings, such as the F-ring). It is the same size as in OTL. [1 G] PLANET (2.4°) {9 AU-10 AU}

Enceladus: (0.18x Moons Mass) The closest major moon to Saturn, it is about the mass of Pluto in OTL, and has water-ice geysers. Underneath the ice is a global ocean thought to contain complex life getting energy from Enceladus' internal heating, though its study has so far been limited. The geysers are the source of Saturn's E-Ring, and the moon also has cryo-tectonic plates that resurface the moon. Enceladus' ocean also contains large amounts of ammonia, which also acts as an anti-freeze. It also has a more eccentric orbit around Saturn, heating the moon even more, and making its ice layer relatively thin.

[0.06 G] MOON (0°) {9 AU-10 AU}

Titan/Xanadu: (2.93x Moons Mass) The largest moon of Saturn. Discovered in 1655, it is 1.6x larger than IRL Titan, which it is very similar to, and has biologically diverse seas of liquid hydrocarbons. Titan orbits where Titan orbits in OTL, and has a hazy atmosphere similar to Titan IRL, but at 2 atm at the surface. Titan, though home to microbes living in its surface lakes (and other microbial life in its subsurface liquid water layer, cannot support intelligent life, due to a lack of energy available.) Titan is large enough to generate its own (weak) magnetic field, like Ganymede OTL. [0.16 G] MOON (0.3°) {9 AU-10 AU}

Iapetus: (0.02x Moons Mass) One of the few moons that managed to escape Titan, Saturn, and Enceladus' gravitational interactions, Iapetus is the 3^rd largest satellite of Saturn, and is the same as in OTL- a large, ellipsoidal, icy moon with a two-tone coloration. [0.02 G] MOON (15.47°) {9 AU-10 AU}

Uranus: (14.54x Moons Mass) Almost the same as in OTL. Srsly. An “ice giant” who has an axis tilted sideways (its moons are also tilted to Uranus' equilateral plane.)

However, Uranus (unlike in IRL) also has a large set of young, (less than 500 Million years old) inner rings composed of both ices and dust (thus much darker than Saturn's rings, but are almost as extensive and massive as Saturns' rings in IRL- a 'hidden treasure'). These main rings are located within Miranda's orbit, and are formed by a Miranda-sized Uranian Moon that broke up a two Billion years ago after approaching the Roche limit. These rings have stayed in pace due to the existence and formation of 'Shepherd moons' within the ring system. Uranus also has a system of faint, dusty, outer rings (outside the orbit of Miranda) formed by collisions between objects near Uranus. [0.89 G] PLANET (15.47°) {18.3 AU-20.1 AU}

Miranda: (0.0009x Moons Mass) Miranda has extreme and varied topography formed by intense geological activity (it looks really cool, go take a look for yourself) and is composed of 75% ice, strangely high. Unlike in OTL, it is geologically active, with cryovolcanoes spewing water ice containing large amounts of ammonia and salts. Its geologic activity is due to tidal interactions with Ariel from its more eccentric orbit (than in OTL). Miranda also has a subsurface ocean containing simple halophies (due to the extreme salt content). It is also the only Uranian Moon that likely supports life. [0.01 G] MOON (4.2°) {18.3 AU-20.1 AU}

Ariel: (0.018x Moons Mass) Similar to in OTL, Ariel is composed of equal parts ices and rocky material, and is crisscrossed with scarps, and canyons due to gravitational interactions with Miranda and tidal heating. It has pockets of ammonia-rich water in its ice layer, similar to pockets of water underneath the ice of Antarctica. These, however, appear to be sterile- one theory is that these lakes were once frozen over, but when Miranda and Ariel went into orbital resonance, these pockets reheated, but devoid of life. [0.03 G] MOON (0.3°) {18.3 AU-20.1 AU}

Umbriel: (0.015x Moons Mass) Same as in OTL. Umbriel, like Ariel and Miranda, has canyons, but has an otherwise old surface dominated by craters. It has a very low albedo of 10%, and has a slightly blueish colour. Like most of the other major Uranian moons, it is composed of equal parts ice and rock. [0.023 G] MOON (0.13°) {18.3 AU-20.1 AU}

Titania: (0.05x Moons Mass) Same as in OTL. Titania has an extremely thin CO2 Atmosphere, which often freezes into dry ice frost. This is from out-gassing of CO2 from its 50 km thick, ammonia-rich ocean. As this water is located very deep, between its core and mantle, along with the moon's distance, means it is not known if it contains life. This is unlikely, however, as it is likely too cold to allow for earth-like life sustaining processes. It has large rifts and scarps formed by the expansion of its interior during its evolution. [0.038 G] MOON (0.34°) {18.3 AU-20.1 AU}

Oberon: (0.04x Moons Mass) Same as OTL. Oberon is a typical Uranian moon, with canyons and rifts (formed by expansion of the planet in its later phases) and is about half ice and rock. It has dark patches similar to marina on the OTL Moon, but formed by cryovolcanic liquids (primarily water) filling the craters, rather than lava. [0.035 G] MOON (0.06°) {18.3 AU-20.1 AU}

Beyond here, information stated may not actually known in the alternate storyline.

Neptune: (17.15x Earths Mass) (Aether, as described, would have serious consequences on the Kuiper Belt- something that I would MUCH rather not have to love around with, especially its dynamics and formation are not fully understood. So no, I can't let it happen. Sorry. I'm making it the same as OTL.) Same as OTL. An ice giant somewhat larger than Uranus, the deep-blue Neptune has the strongest sustained winds in the solar system (more than even Jupiter). [1.14 G] PLANET (1.78°) {29.8 AU-30.3 AU}

Triton: (0.29x Moons Mass) Neptune's only large moon, Triton is a captured dwarf planet orbiting retrograde to Neptune. It is 2x larger than in OTL, and has a surface covered in frozen nitrogen and methane, and a crust made of water and ammonia ices (which make up 30% of its mass). It has a young surface dotted with nitrogen cryovolcanoes (which can spew plumes up to 8km high), and cut with icy valleys and ridges. Like in OTL, it has ice caps of nitrogen- along with flat, nitrogen-ice plains and “cantaloupe terrain” formed from cryovolcanism.

Triton also has an orbit (but still inclined and retrograde) slightly closer to Neptune- the increased mass of Triton, along with greater tidal heating from a closer orbit means that more of its nitrogen ices have sublimated than in OTL. Therefore, Triton has a much thicker nitrogen atmosphere at a pressure of 57 Pa- 30 x than in OTL (but still very thin- it's about as thin as Mars' in OTL at Olympus Mons). This atmosphere also gives Triton a slight haze, due to its content of hydrocarbons and nitriles in the lower atmosphere, forming from sublimated methane (which also helps heat up the moon).

Triton also has a subsurface ocean suitable for life, including multi-celled life- though its biosphere lacks the complexity seen in other moons found closer to the Sun. The first lander sent here, MANN, returned overly optimistic information about Triton and its habitability for life. [0.08 G] MOON (156.89°) {29.8 AU-30.3 AU}

Pluto: (0.65x Earths Mass) A planet orbiting in a highly eccentric and inclined orbit after being shot out by Neptune/Aether during the formation of the solar system. It has a hazy, thick nitrogen-methane atmosphere (of 6 atm pressure at sea level) from sublimated nitrogen ice, along with methane-based cryovolcanism, thanks to internal and some tidal heating from Charon. Like in OTL, it is extremely contrastive, has an extreme axial tilt of 120°, and has 5 moons- the largest being Charon. However, unlike in OTL, Pluto is not in a binary system, as Charon is much smaller than Pluto. Pluto's surface is mainly water ice, covered with a layer of methane, including methane seas (like Titan, but deeper, as the Sun does not break apart methane molecules out here) with a variety of landforms. There are also a variety of lifeforms here, centring around underwater cryovolcanic vents (but also lacks significant complexity.)

Pluto was discovered in 1999, as its relatively high infrared signature gave it away to infrared telescopes(despite its insane distance). It was later found to be responsible for the orbits of Sednoids, along as being the explanation for a sudden drop-off in the Kuiper Belt at 48 AU- the Kuiper Cliff- caused by Pluto “clearing its orbit”. Pluto has an extremely eccentric orbit.

Pluto also has a thin, unstable ring system- thought to be caused by an asteroid-sized moon that got too close to Pluto (this moon was almost certainly a small, captured moon captured much later than Charon's formation.) [0.43 G] PLANET (3°) {110 AU-197 AU}

<NEW FROM HERE ON OUT>

Charon: (0.7x Moons Mass) The only major moon of Pluto, Charon is about half the size of Titan OTL. Charon, which formed from a collision on Pluto- has a similar composition as Pluto. Though lifeless, Charon has a strangely young surface dominated by water ice and ammonia (and some hydrocarbons forming an icy inch-thick crust on top of the water ad ammonia ices)- along with cryogeysers spewing these ices. As there is a lack of Sun, volatiles do not form reddish tholins here, making it colourless. Like the Moon OTL, Charon is slowly moving away from Earth, something that caused the destabilization of the orbits of Pluto's other moons. The volcanism is a complete mystery- it's thought the differentiated Charonian interior (and possibly also Pluto's interior) contains a material that traps heat inside. Little did they know it was even stranger than they had initially suspected... [0.11 G] MOON (0°) {110 AU-197 AU}

Persephone/Tyche: (30.2x Earths Mass) Discovered in 2014 by WISE, Tyche (whose name to-be is currently being debated) is a large ice giant. It is currently unknown if Persephone has any rings or moons (though we know there are the latter, and of the latter, though the rings are dim and simple, like Jupiter's). It is also responsible for the orbits of some Sednoids (which had previously been unaccounted for- as Pluto alone could not be responsible for Sedna's orbit.) Its far distance from the Sun, relatively small size, and lack of seasons (due to its solar distance) means that it lacks much of the winds of most other gas giants- appearing similar to Uranus during its Voyager 2 flyby, though slightly darker in colour.

Tyche is also the largest “detached object” in the solar system, and is in a halo orbit around the Sun, in a near-circular, inclined orbit. It is also debated whether it is a dwarf planet or not, as, despite its size, its painstakingly slow orbital velocity (due to its distance from the Sun) means it has not cleared its orbit. Tyche is likely to be the hypothetical “fifth giant planet” responsible for creating the current solar system (without ejecting Mars and/or Minerva in the process). [0.92 G] PLANET? (23°) {1085 AU-1290 AU}

Europa: (0.653x Moons Mass) Europa is the closest moon to Persephone, and is very similar to its version in OTL. Europa has a thick water-ice crust, with a liquid water ocean underneath its surface. Its surface is shaped by cryovolcanoes (though smaller than those on Enceledus, they are located at Europa's poles) and 'cryo-plate tectonics'. As a result, Europa has few craters on its surface, has deposits of salt coating parts of its surface (created when the salty water brought from below rose to the surface during eruptions- similar to lava on Earth.)

However, due to Europa's intensely close orbit to Persephone (which is also somewhat elliptical, with part of the orbit outside of the inner boundary of a Persephone synchronous orbit), it also orbits somewhat faster than its parent planet's rotation. Both these factors lead to greater tidal heating, liquifying its underwater ocean. However, like Triton's retrograde orbit, Europa's super-synchronous orbit dooms the moon to an eventual break-up over Persephone (in the next billion years, as Europa is VERY close to Tyche).

This, however, means the moon supports life, even without gravitational resonances providing significant heating. This life is relatively complex, and is clustered around hydrothermic vents and other geological underwater heat sources- though bacteria do live elsewhere in the ocean (along with the underside of the water-ice crust, and in pockets of water inside the crust). Many of these consume hydrogen peroxide, tholins, and other minerals from the surface of Europa. [0.13 G] MOON (1.5°) {1085 AU-1290 AU}

Europa likely formed from the collisions of other Tycheian moons coalescing into one large object- the rest of the debris from which went on the form Tyche's smaller round, outer moons.

Mimas: (0.042x Ceres Mass) Similar to its version IRL, Mimas is a very heavily cratered moon of Persephone. Mimas is known for its enormous, crater 'Hershel' that makes it look like the Death Star (alas, Kerbals have made numerous proposals to hollow out Mimas into a Death Star- none of which materialized, thankfully)- this impact shaped Mimas, and nearly shattered the moon apart. It is also a 'trojan moon' to Europa, and is situated at its trailing L5 Lagrange Point.

It is composed mostly of water ice and, despite sharing an orbit so close to Persephone, has a liquid water ocean only very deep in- and is only home to simple life forms.[0.0065 G] (TROJAN) MOON (1.5°) {1085 AU-1290 AU}

Hyperion: (0.0059x Ceres Mass) Hyperion- the same as its version in IRL (other than its different orbit), is a small, irregular moon noted for its sponge-like appearance- which formed due to the moon being very porous and its very low density. Hyperion is darkened due to material from nearby moons, and is somewhat reddish. It is mostly composed of water ice, with very little rock. [0.0021 G] MOON (0.43°) {1085 AU-1290 AU}

Dione: (1.17x Ceres Mass) Dione is an outer, rounded moon of Persephone composed of mostly of water ice (with a small fraction of rock), and is in resonance with Tethys, Hyperion, and Rhea. Being very similar to its version IRL, Rhea and Dione are 'twins', with many of the same features, such as dissimilar leading and trailing hemispheres. However, unlike Rhea, Dione has enormous fractures and ice cliffs dominating its trailing hemisphere, formed by tectonic fracturing in the distant past. It also lacks an internal ocean, unlike its twin moon- though small pockets of heated water are thought to exist in its interior. [0.024 G] MOON (0°) {1085 AU-1290 AU}

Tethys: (0.66x Ceres Mass) Tethys, an outer, rounded moon of Persephone composed mostly of water ice, and is somewhat different from its version in OTL- however, it is much darker than in OTL, due to not being sandblasted by ring particles. Tethys' ice has a large porosity, and is contaminated in many places by compounds like haematites, ammonia, carbon dioxide, and organics. Tethys also lacks the slight discolorations of its OTL counterpart, due to Persephone having a much less powerful magnetosphere, and Tethys' distance from its parent body.

Tethys also is in orbital resonance with Dione and Rhea, and has some chasms and a large impact crater- Odysseus, 2/5s of the moon's diameter. Tethys, despite its resonance, also lacks an internal ocean, like in OTL- though small pockets of heated water are thought to exist in its interior. [0.015 G] MOON (1.12°) {1085 AU-1290 AU}

Rhea: (2.46x Ceres Mass) Rhea, the 2^ndlargest moon of Persephone, Rhea is similar to its version in OTL. Rhea is an undifferentiated body (ice and rock is spread throughout, therefore lacking a core) with an internal liquid water ocean produced by its gravitational resonance with Tethys and Dione, along with its internal radioactive heating. This liquid water ocean is home to some halophilic bacteria (the internal ocean is very salty) Rhea is a twin moon of Dione, and thus both are similar to each other (for example, both have fractures and ice cliffs). Rhea has a thin exosphere composed of carbon dioxide from oxidation of organics on its surface, which is white, but heavily cratered.

However, Rhea is mainly notable for having a tenuous ring system- the only moon yet known to have a ring system of its own. These particles are 'shepherded' by tiny moonlets that orbit within the ring system, and was formed from an impact 150 million years ago. [0.027 G] MOON (0.35°) {1085 AU-1290 AU}

<Note: Not sure if the Rhea- Tethys- Dione orbital resonance is possible. Is it possible to simulate?>

Fredinnus: (3.4x Earths Mass) Discovered by the decrypting of the Phobos and Deimos Monoliths. A rouge planet on an escape trajectory from Sol, it is currently near its apoapsis to the Sun. It could be a good refuelling stop for interstellar missions, and seems to show that rouge planets are quite common in the Milky Way (estimations range from 2 to 100,000x more rouge planets than stars). Aside from being a frozen-over carbon planet, little else is known about it. All information on this object has been obtained from the monoliths, but even the archivers seemed to know little about this object. Fredinnus was the name given to this object by the archiving civilization. [? G] ROUGE PLANET (11°) {Currently 0.2 Ly from the Sun}

Nibiru System: <Not going to be compete for a while> {Currently 0.4 ly from Sun?}

Note: Tylo might return as an outer, icy planet.

Crisplance: (2.1x Jupiter Masses) Discovered by the decrypting of the Phobos and Deimos Monoliths. A rouge planet on an escape trajectory from Sol, it is currently far from its apospsis to the Sun. It could be a good refuelling stop for interstellar missions, and seems to show that rouge planets are quite common in the Milky Way (estimations range from 2 to 100,000x more rouge planets than stars). Aside from being an enormous gas giant, little else is known about it. All information on this object has been obtained from the monoliths, but even the archivers seemed to know little about this object. Crisplance was the name given to this object by the archiving civilization. [? G] ROUGE PLANET (5°) {Currently 0.7 Ly from the Sun}

Silverstrivler: (0.75x Earths Mass) Discovered by the decrypting of the Phobos and Deimos Monoliths. A rouge planet on an escape trajectory from Sol, it is currently approaching its apoapsis to the Sun. It could be a good refuelling stop for interstellar missions, and seems to show that rouge planets are quite common in the Milky Way (estimations range from 2 to 100,000x more rouge planets than stars). Aside from being a coreless water-ice planet, little else is known about it. All information on this object has been obtained from the monoliths, but even the archivers seemed to know little about this object. Fredinnus was the name given to this object by the archiving civilization. [? G] ROUGE PLANET (8°) {Currently 0.9 Ly from the Sun}

For reference:

Ceres Mass: 9.393 x 10^20 kg

Moon Mass: 7.348 x 10^22 kg

Earth Mass: 5.972 x 10^24 kg

Lastly, ChrisSpace, what was that about making Luna have intelligent species?

ChrisSpace · January 10, 2016

7 hours ago, fredinno said:

Finally, the Sol System is complete.

Oh wow, you've really done a ----load of work here! Sometime soon-ish I will update the front post with some of these ideas.

7 hours ago, fredinno said:

The night side, however, is relatively cold, (compared to the day side) meaning silicates (and under rare circumstances, ices) are present here.

About this, the reason I excluded it before is that the planet has an atmosphere, and I though that would spread the heat around more.

7 hours ago, fredinno said:

as there is not enough water to support the amount of plants needed by animal life (aside from its intelligent species, which we will get to later).

I still don't get how a planet can have intelligent life without any other animals.

7 hours ago, fredinno said:

These animals also eat some meat, all of which is produced from domesticated animals.

But before you said they were the only animal species, sooo... (Also I'm 50/50 about having Kerbals on Venus)

7 hours ago, fredinno said:

A 2.48 Km Diameter moon

I actually imagined Aurora's diameter to be more like 600km, not 2-3km.

7 hours ago, fredinno said:

<Moved monoliths here to give you a reason to add Phobos-Deimos to this system>

I was halfway through writing about their unnessesaryness when I saw this. Clever thinking! (and yes, unnessesaryness is a word)

7 hours ago, fredinno said:

In this alternate timeline, its orbit is determined to pass a minimum of (0.003 AU) to the Earth-Luna system in 1979- dangerously close. As a result, it generates significant scientific study on the comet's orbit, and how to mitigate a potential impact.

Clever thinking, but by 1979 in this alternate time line redirecting comet-sized objects would be relatively easy.

7 hours ago, fredinno said:

Ceres: (0.013x Moons Mass) Same as in OTL, but in a more inclined orbit. Also is surrounded by a very, faint, young ring (“Dres-troids”), thought to be debris from an asteroid impact that took place a few million years ago.

I'm not sure if we need this.

7 hours ago, fredinno said:

Dres: (0.017x Moons Mass) A Ceres-like protoplanetary object slightly larger than Ceres OTL. It is similar to Dres in KSP 0.90, with large canyons likely formed when the moon underwent thermal expansion.

Again, is this necessary?

7 hours ago, fredinno said:

(such as the “MILLER” planetary lander/human precursor sent here, which was quickly consumed by an unexpectedly large swell)

Didn't you just say that no probes have landed there yet?

7 hours ago, fredinno said:

Unlike in OTL, it lacks large, noticeable rings- the processes that formed the larger rings did not take place here (though Saturn still has smaller rings, such as the F-ring).

-__-

7 hours ago, fredinno said:

Uranus: (14.54x Moons Mass)

That's awfully small for a gas giant lol. Did you mean 14.54 Earth mass?

7 hours ago, fredinno said:

Ariel: (0.018x Moons Mass) Similar to in OTL, Ariel is composed of equal parts ices and rocky material, and is crisscrossed with scarps, and canyons due to gravitational interactions with Miranda and tidal heating. It has pockets of ammonia-rich water in its ice layer, similar to pockets of water underneath the ice of Antarctica. These, however, appear to be sterile- one theory is that these lakes were once frozen over, but when Miranda and Ariel went into orbital resonance, these pockets reheated, but devoid of life. [0.03 G] MOON (0.3°) {18.3 AU-20.1 AU}

Umbriel: (0.015x Moons Mass) Same as in OTL. Umbriel, like Ariel and Miranda, has canyons, but has an otherwise old surface dominated by craters. It has a very low albedo of 10%, and has a slightly blueish colour. Like most of the other major Uranian moons, it is composed of equal parts ice and rock. [0.023 G] MOON (0.13°) {18.3 AU-20.1 AU}

7 hours ago, fredinno said:

Oberon: (0.04x Moons Mass) Same as OTL. Oberon is a typical Uranian moon, with canyons and rifts (formed by expansion of the planet in its later phases) and is about half ice and rock. It has dark patches similar to marina on the OTL Moon, but formed by cryovolcanic liquids (primarily water) filling the craters, rather than lava. [0.035 G] MOON (0.06°) {18.3 AU-20.1 AU}

I don't really see the point of these two. Perhaps they should just be merged into Miranda and Titania.

7 hours ago, fredinno said:

There are also a variety of lifeforms here, centring around underwater cryovolcanic vents (but also lacks significant complexity.)

Huh, life on pluto. I never even thought of that.

7 hours ago, fredinno said:

Charon is slowly moving away from Earth

???

7 hours ago, fredinno said:

(alas, Kerbals have made numerous proposals to hollow out Mimas into a Death Star- none of which materialized, thankfully)-

Turning Mimas into a DS-like battle station is the one thing keeping me from removing it due to unnessesaryness right now.

7 hours ago, fredinno said:

Hyperion: (0.0059x Ceres Mass) Hyperion- the same as its version in IRL (other than its different orbit), is a small, irregular moon noted for its sponge-like appearance- which formed due to the moon being very porous and its very low density. Hyperion is darkened due to material from nearby moons, and is somewhat reddish. It is mostly composed of water ice, with very little rock. [0.0021 G] MOON (0.43°) {1085 AU-1290 AU}

Dione: (1.17x Ceres Mass) Dione is an outer, rounded moon of Persephone composed of mostly of water ice (with a small fraction of rock), and is in resonance with Tethys, Hyperion, and Rhea. Being very similar to its version IRL, Rhea and Dione are 'twins', with many of the same features, such as dissimilar leading and trailing hemispheres. However, unlike Rhea, Dione has enormous fractures and ice cliffs dominating its trailing hemisphere, formed by tectonic fracturing in the distant past. It also lacks an internal ocean, unlike its twin moon- though small pockets of heated water are thought to exist in its interior. [0.024 G] MOON (0°) {1085 AU-1290 AU}

Tethys: (0.66x Ceres Mass) Tethys, an outer, rounded moon of Persephone composed mostly of water ice, and is somewhat different from its version in OTL- however, it is much darker than in OTL, due to not being sandblasted by ring particles. Tethys' ice has a large porosity, and is contaminated in many places by compounds like haematites, ammonia, carbon dioxide, and organics. Tethys also lacks the slight discolorations of its OTL counterpart, due to Persephone having a much less powerful magnetosphere, and Tethys' distance from its parent body.

Tethys also is in orbital resonance with Dione and Rhea, and has some chasms and a large impact crater- Odysseus, 2/5s of the moon's diameter. Tethys, despite its resonance, also lacks an internal ocean, like in OTL- though small pockets of heated water are thought to exist in its interior. [0.015 G] MOON (1.12°) {1085 AU-1290 AU}

What is the point of these?

8 hours ago, fredinno said:

Lastly, ChrisSpace, what was that about making Luna have intelligent species?

I like the idea, but I'm fine either way.

Findthepin1 · January 10, 2016

The human CO2 tolerance might be much more than is stated in this thread. Seeing this (long read) it appears the human tolerance for CO2 is actually around 90mm (12kpa) partial pressure.

Edited January 10, 2016 by Findthepin1
fyi

fredinno · January 10, 2016

2 hours ago, Findthepin1 said:

The human CO2 tolerance might be much more than is stated in this thread. Seeing this (long read) it appears the human tolerance for CO2 is actually around 90mm (12kpa) partial pressure.

I was confused surrounding that, so thank you! But this actually has more to do with lack of O2, rather than too much CO2- and at approx 1atm pressure (for simplicity).

fredinno · January 10, 2016

4 hours ago, ChrisSpace said:

That's awfully small for a gas giant lol. Did you mean 14.54 Earth mass?

Yes. Darn it, I need to wake up.

4 hours ago, ChrisSpace said:

12 hours ago, fredinno said:

Charon is slowly moving away from Earth

???

Wait- I'll fix that- it's almost certainly a typo....

4 hours ago, ChrisSpace said:

I don't really see the point of these two. Perhaps they should just be merged into Miranda and Titania.

4 hours ago, ChrisSpace said:

12 hours ago, fredinno said:

Hyperion: (0.0059x Ceres Mass) Hyperion- the same as its version in IRL (other than its different orbit), is a small, irregular moon noted for its sponge-like appearance- which formed due to the moon being very porous and its very low density. Hyperion is darkened due to material from nearby moons, and is somewhat reddish. It is mostly composed of water ice, with very little rock. [0.0021 G] MOON (0.43°) {1085 AU-1290 AU}

Dione: (1.17x Ceres Mass) Dione is an outer, rounded moon of Persephone composed of mostly of water ice (with a small fraction of rock), and is in resonance with Tethys, Hyperion, and Rhea. Being very similar to its version IRL, Rhea and Dione are 'twins', with many of the same features, such as dissimilar leading and trailing hemispheres. However, unlike Rhea, Dione has enormous fractures and ice cliffs dominating its trailing hemisphere, formed by tectonic fracturing in the distant past. It also lacks an internal ocean, unlike its twin moon- though small pockets of heated water are thought to exist in its interior. [0.024 G] MOON (0°) {1085 AU-1290 AU}

Tethys: (0.66x Ceres Mass) Tethys, an outer, rounded moon of Persephone composed mostly of water ice, and is somewhat different from its version in OTL- however, it is much darker than in OTL, due to not being sandblasted by ring particles. Tethys' ice has a large porosity, and is contaminated in many places by compounds like haematites, ammonia, carbon dioxide, and organics. Tethys also lacks the slight discolorations of its OTL counterpart, due to Persephone having a much less powerful magnetosphere, and Tethys' distance from its parent body.

Tethys also is in orbital resonance with Dione and Rhea, and has some chasms and a large impact crater- Odysseus, 2/5s of the moon's diameter. Tethys, despite its resonance, also lacks an internal ocean, like in OTL- though small pockets of heated water are thought to exist in its interior. [0.015 G] MOON (1.12°) {1085 AU-1290 AU}

What is the point of these?

So I can have every single body in the IRL solar system in the Alt. Timeline System. Hey you didn't give me any parameters of moons to work with, so...

I suggest you do that next time. On the other hand, Rhea is a ringed moon, so yay?

On the other hand, you didn't even tell me to make Uranus, so there's that.

4 hours ago, ChrisSpace said:

12 hours ago, fredinno said:

(alas, Kerbals have made numerous proposals to hollow out Mimas into a Death Star- none of which materialized, thankfully)-

Turning Mimas into a DS-like battle station is the one thing keeping me from removing it due to unnessesaryness right now.

...And please don't remove my stuff for unnecessaryness- maybe you could just mention it, but not actually describe it (with the exception of Rhea's rings)

4 hours ago, ChrisSpace said:

12 hours ago, fredinno said:

Unlike in OTL, it lacks large, noticeable rings- the processes that formed the larger rings did not take place here (though Saturn still has smaller rings, such as the F-ring).

-__-

I told you I was going to pull this off earlier. I gave those rings to Ur Anus to make it more interesting. It can still be changed, but only if you require me to.

4 hours ago, ChrisSpace said:

12 hours ago, fredinno said:

There are also a variety of lifeforms here, centring around underwater cryovolcanic vents (but also lacks significant complexity.)

Huh, life on pluto. I never even thought of that.

It might be too cold. I'll need to look that over again, but it *should* be fine, I think.

4 hours ago, ChrisSpace said:

12 hours ago, fredinno said:

(such as the “MILLER” planetary lander/human precursor sent here, which was quickly consumed by an unexpectedly large swell)

Didn't you just say that no probes have landed there yet?

I feel really stupid right now. I thought I deleted that, but maybe not...

4 hours ago, ChrisSpace said:

12 hours ago, fredinno said:

Ceres: (0.013x Moons Mass) Same as in OTL, but in a more inclined orbit. Also is surrounded by a very, faint, young ring (“Dres-troids”), thought to be debris from an asteroid impact that took place a few million years ago.

I'm not sure if we need this.

12 hours ago, fredinno said:

Dres: (0.017x Moons Mass) A Ceres-like protoplanetary object slightly larger than Ceres OTL. It is similar to Dres in KSP 0.90, with large canyons likely formed when the moon underwent thermal expansion.

Again, is this necessary?

Brother, for every interesting Solar System body, there's a million unnecessary ones. Also, might make Nibiru a binary. Maybe, but only if I can keep them orbiting a single barycenter. If not, than maybe not. It does make things more complex, but..

Also:https://www.youtube.com/watch?v=5GXFzMnCWBs Dres is useless.

Also Also:https://www.youtube.com/watch?v=2n1l8_a-gU0 Nor does it exist.

4 hours ago, ChrisSpace said:

12 hours ago, fredinno said:

In this alternate timeline, its orbit is determined to pass a minimum of (0.003 AU) to the Earth-Luna system in 1979- dangerously close. As a result, it generates significant scientific study on the comet's orbit, and how to mitigate a potential impact.

Clever thinking, but by 1979 in this alternate time line redirecting comet-sized objects would be relatively easy.

Redirecting comets is never easy, especially in 1979. Also, I saved you the work of finding a comet to (try to) f**k up Earth!

4 hours ago, ChrisSpace said:

12 hours ago, fredinno said:

<Moved monoliths here to give you a reason to add Phobos-Deimos to this system>

I was halfway through writing about their unnessesaryness when I saw this. Clever thinking! (and yes, unnessesaryness is a word)

I'm a rock saver.

4 hours ago, ChrisSpace said:

12 hours ago, fredinno said:

A 2.48 Km Diameter moon

I actually imagined Aurora's diameter to be more like 600km, not 2-3km.

I based if off the asteroid Amun, which is that tiny.

4 hours ago, ChrisSpace said:

12 hours ago, fredinno said:

These animals also eat some meat, all of which is produced from domesticated animals.

But before you said they were the only animal species, sooo... (Also I'm 50/50 about having Kerbals on Venus)

Typo; the only NATURAL animals. And I might change this- interstellar journeys likely don't have meat on board. I'll be up with a V2.1 fairly soon.

4 hours ago, ChrisSpace said:

12 hours ago, fredinno said:

as there is not enough water to support the amount of plants needed by animal life (aside from its intelligent species, which we will get to later).

I still don't get how a planet can have intelligent life without any other animals.

Interstellar journeying. It might be better to move the Kerbals to Luna and abandon Venus to the plants. Water and Oxygen are problems here.

4 hours ago, ChrisSpace said:

12 hours ago, fredinno said:

The night side, however, is relatively cold, (compared to the day side) meaning silicates (and under rare circumstances, ices) are present here.

About this, the reason I excluded it before is that the planet has an atmosphere, and I though that would spread the heat around more.

But it was stated it quickly evaporated from Le Sun, so I assumed it would be relatively thin, like Mars'.

4 hours ago, ChrisSpace said:

12 hours ago, fredinno said:

Finally, the Sol System is complete.

Oh wow, you've really done a ----load of work here! Sometime soon-ish I will update the front post with some of these ideas.

.

Also, I just realized that objects fly past the Oort cloud faster than I thought- 0.00028 ly/year (using Scholz’s starhttp://www.universetoday.com/119038/a-star-passed-through-the-solar-system-just-70000-years-ago/ as an example). This would mean 0.27ly in travel distance in 10,000 years, and since I anticipated the monoliths are made maybe 11000 years ago (Plato's time of Atlantis), then a man-made disaster of sorts occurs, leaving it in chaos- agriculture redevelops after another 1000 years. This might work out.

Edited January 10, 2016 by fredinno

ChrisSpace · January 10, 2016

15 minutes ago, fredinno said:

So I can have every single body in the IRL solar system in the Alt. Timeline System.

I suppose i'll let you do that so long as it doesn't mess up anything.

16 minutes ago, fredinno said:

I feel really stupid right now. I thought I deleted that, but maybe not...

I'm fine either way.

17 minutes ago, fredinno said:

Redirecting comets is never easy, especially in 1979.

In this alternate timeline 1979 is like the mid-21st century in OTL.

18 minutes ago, fredinno said:

Also, I saved you the work of finding a comet to (try to) f**k up Earth!

Yeah, thanks. One of my other ideas was to very slightly move the Tunguska meteor's path so instead it would be heading towards a major city in 1908 instead of the middle of nowhere.

20 minutes ago, fredinno said:

I based if off the asteroid Amun, which is that tiny.

I based it off minmus (without the ice), scaled up to the equivalent human-world size.

23 minutes ago, fredinno said:

Typo; the only NATURAL animals. And I might change this- interstellar journeys likely don't have meat on board.

I still don't like your idea of Venusians being an ancient spacefaring species, unless they have regressed to the point of having no memory of advanced technology.

24 minutes ago, fredinno said:

Water and Oxygen are problems here.

Are you saying Venus's air is unbreathable? That would be a problem.

25 minutes ago, fredinno said:

But it was stated it quickly evaporated from Le Sun, so I assumed it would be relatively thin, like Mars'.

But wouldn't that be enough to transfer the heat around? I mean, nighttime on Mars is far warmer than on Mercury, for example.

fredinno · January 10, 2016

5 minutes ago, ChrisSpace said:

32 minutes ago, fredinno said:

Water and Oxygen are problems here.

Are you saying Venus's air is unbreathable? That would be a problem.

Didn't I already say this, though, earlier?

6 minutes ago, ChrisSpace said:

33 minutes ago, fredinno said:

Typo; the only NATURAL animals. And I might change this- interstellar journeys likely don't have meat on board.

I still don't like your idea of Venusians being an ancient spacefaring species, unless they have regressed to the point of having no memory of advanced technology.

I don't like it either. I would rather move it to Luna and abandon Venus, TBH.

7 minutes ago, ChrisSpace said:

33 minutes ago, fredinno said:

Redirecting comets is never easy, especially in 1979.

In this alternate timeline 1979 is like the mid-21st century in OTL.

Like the Fallout universe, but in reverse? I'm pretty sure things like the Renaissance and Industrial Revolution would have to take much earlier then. You might want to get someone else to mess with that. I'm not an expert.

9 minutes ago, ChrisSpace said:

36 minutes ago, fredinno said:

But it was stated it quickly evaporated from Le Sun, so I assumed it would be relatively thin, like Mars'.

But wouldn't that be enough to transfer the heat around? I mean, nighttime on Mars is far warmer than on Mercury, for example.

It might. I'll look into it.

10 minutes ago, ChrisSpace said:

36 minutes ago, fredinno said:

Also, I saved you the work of finding a comet to (try to) f**k up Earth!

Yeah, thanks. One of my other ideas was to very slightly move the Tunguska meteor's path so instead it would be heading towards a major city in 1908 instead of the middle of nowhere.

...I don't think that would validate a redirect mission though- especially since a city is such a small target, it could easily fall into the countryside or suburbs.

11 minutes ago, ChrisSpace said:

37 minutes ago, fredinno said:

So I can have every single body in the IRL solar system in the Alt. Timeline System.

I suppose i'll let you do that so long as it doesn't mess up anything.

I try not to.

11 minutes ago, ChrisSpace said:

38 minutes ago, fredinno said:

I based if off the asteroid Amun, which is that tiny.

I based it off minmus (without the ice), scaled up to the equivalent human-world size.

Huh. I tried to scale KSP bodies' masses to 10x, like RSS, but it surprisingly doesn't work. It's actually 100x KSP bodies mass>Real bodies mass. But even then, Minnmus is composed largely of ices (in terms of mass), so that's not really a valid thing to ask for- anything would be a guesstimation.

Minnmus's mass = Aurora's Mass would actually be far larger than the largest M-type known, 16 Psyche, due to objects scaling. Even without the mass scaling, Minnmus would still be larger than Phyche. I might have to decline that request.

ChrisSpace · January 10, 2016

2 hours ago, fredinno said:

Didn't I already say this, though, earlier?

- looks back at previous posts - oh, yeah, you did. Well I should be able to find a way around this.

2 hours ago, fredinno said:

I don't like it either. I would rather move it to Luna and abandon Venus, TBH.

By 'abandon', does that mean Venus wouldn't have any intelligent life?

2 hours ago, fredinno said:

Like the Fallout universe, but in reverse? I'm pretty sure things like the Renaissance and Industrial Revolution would have to take much earlier then. You might want to get someone else to mess with that. I'm not an expert.

Sort of. Don't worry about that part for now.

2 hours ago, fredinno said:

...I don't think that would validate a redirect mission though- especially since a city is such a small target, it could easily fall into the countryside or suburbs.

Perhaps the Tunguska meteor is too small to use. Oh, how about this: https://en.wikipedia.org/wiki/(152680)_1998_KJ9 ? On December 31 1914 it came pretty close to Earth, and if I move it slightly so it impacts, it would have dozens of Tsar Bomba's worth of impact energy and make a crater 6-10 km wide. That should be enough to wipe out a small country. A slightly bigger option would be https://en.wikipedia.org/wiki/(163132)_2002_CU11 which would have an impact/flyby date of August 30 1925.

2 hours ago, fredinno said:

Huh. I tried to scale KSP bodies' masses to 10x, like RSS, but it surprisingly doesn't work. It's actually 100x KSP bodies mass>Real bodies mass. But even then, Minnmus is composed largely of ices (in terms of mass), so that's not really a valid thing to ask for- anything would be a guesstimation.

Minnmus's mass = Aurora's Mass would actually be far larger than the largest M-type known, 16 Psyche, due to objects scaling. Even without the mass scaling, Minnmus would still be larger than Phyche. I might have to decline that request.

The 10x conversion from KSP to real life is supposed to be based on radius/diameter, not mass.

fredinno · January 10, 2016

10 hours ago, ChrisSpace said:

13 hours ago, fredinno said:

Didn't I already say this, though, earlier?

- looks back at previous posts - oh, yeah, you did. Well I should be able to find a way around this.

Hopefully.

10 hours ago, ChrisSpace said:

13 hours ago, fredinno said:

I don't like it either. I would rather move it to Luna and abandon Venus, TBH.

By 'abandon', does that mean Venus wouldn't have any intelligent life?

Yes.

10 hours ago, ChrisSpace said:

13 hours ago, fredinno said:

Huh. I tried to scale KSP bodies' masses to 10x, like RSS, but it surprisingly doesn't work. It's actually 100x KSP bodies mass>Real bodies mass. But even then, Minnmus is composed largely of ices (in terms of mass), so that's not really a valid thing to ask for- anything would be a guesstimation.

Minnmus's mass = Aurora's Mass would actually be far larger than the largest M-type known, 16 Psyche, due to objects scaling. Even without the mass scaling, Minnmus would still be larger than Phyche. I might have to decline that request.

The 10x conversion from KSP to real life is supposed to be based on radius/diameter, not mass.

The thing is, though, if Kerbin=Earth, the correct mass conversion is actually 100x KSP objects mass- making Minnmus too big.

10 hours ago, ChrisSpace said:

13 hours ago, fredinno said:

...I don't think that would validate a redirect mission though- especially since a city is such a small target, it could easily fall into the countryside or suburbs.

Perhaps the Tunguska meteor is too small to use. Oh, how about this: https://en.wikipedia.org/wiki/(152680)_1998_KJ9 ? On December 31 1914 it came pretty close to Earth, and if I move it slightly so it impacts, it would have dozens of Tsar Bomba's worth of impact energy and make a crater 6-10 km wide. That should be enough to wipe out a small country. A slightly bigger option would be https://en.wikipedia.org/wiki/(163132)_2002_CU11 which would have an impact/flyby date of August 30 1925.

The thing is though, I originally wanted to do a short period comet, because those are easy to observe- all the asteroids you gave me were found near the turn of the millennium. I chose Swift-Tuttle despite its long orbit because of this, and also because an impact would be catastrophic (I mean, it's supposed to be redirected anyways?) The other problem with asteroids is that they need to be at least 1km in diameter to cause serious damage.

http://pan-starrs.ifa.hawaii.edu/public/asteroid-threat/asteroid_threat.html

On the other hand, you'd need to probably need at least one Jupiter flyby to change the incination to a retrograde 113.45 Degrees, like Swift-Tuttle here, maybe using something like a aerogravity assist. https://en.wikipedia.org/wiki/Aerogravity_assist

insert_name · January 10, 2016

would it be possible to have buoyant life in the upper atmosphere of a gas giant

fredinno · January 10, 2016

3 hours ago, insert_name said:

would it be possible to have buoyant life in the upper atmosphere of a gas giant

http://worldbuilding.stackexchange.com/questions/4757/is-it-possible-that-a-gas-giant-of-similar-size-to-jupiter-could-harbor-life

Possibly. Jupiter is too big (radiation problems) but an ice giant like Uranus might work, if there's enough energy- especially since things like water are much more common. Of course, doing so depends on whether ChrisSpace would want it.

Also, I encourage others to join this conversation!

ChrisSpace · January 11, 2016

6 hours ago, fredinno said:

The thing is though, I originally wanted to do a short period comet, because those are easy to observe- all the asteroids you gave me were found near the turn of the millennium. I chose Swift-Tuttle despite its long orbit because of this, and also because an impact would be catastrophic (I mean, it's supposed to be redirected anyways?) The other problem with asteroids is that they need to be at least 1km in diameter to cause serious damage.

http://pan-starrs.ifa.hawaii.edu/public/asteroid-threat/asteroid_threat.html

On the other hand, you'd need to probably need at least one Jupiter flyby to change the incination to a retrograde 113.45 Degrees, like Swift-Tuttle here, maybe using something like a aerogravity assist. https://en.wikipedia.org/wiki/Aerogravity_assist

Yeah i'm going with your idea.

5 hours ago, insert_name said:

would it be possible to have buoyant life in the upper atmosphere of a gas giant

Oh wow how did I not think of this?

1 hour ago, fredinno said:

Possibly. Jupiter is too big (radiation problems) but an ice giant like Uranus might work, if there's enough energy- especially since things like water are much more common. Of course, doing so depends on whether ChrisSpace would want it.

Are you sure the radiation is bad in Jupiter's cloud layer? In any case, I suppose the gravity would cause problems. But I don't see anything wrong with using Saturn though.

Is this alternate solar system possible?

Recommended Posts

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Link to comment

Share on other sites

Join the conversation