AloE

I agree...the people of the KSP community & wealth of experience & insights in the historical threads & ongoing exploration & innovation & just plain fun shared on this forum that are what brought me to KSP (& in case the new benefactors are watching also to allocate resource to support/acquire many types of KSP licenses & even purchase them as gifts for others over the years ;-)

" While there is a great deal of useful information in past discussions, the forums have become too unreliable"... The above quote is from one such useful post. @scimas 's initial state .cfg for Principia RSS remain active at the google drive link :-) Exemplifying the remarkable 'desktop precision' of Principia's modification to KSP, one may explore rather unique astronomical events in KSP. In this case, I've loaded the "2020" initial state created by scimas in order to explore the current Titan Shadow Transits of Saturn. Principia & RSS & KSP provide the opportunity to travel in your favorite craft to view the near 'ring crossing' shadow transit on 2025 April 29... (or pretend like I do that there are colonies around Saturn & just edit the KSP save to place a 'landed' craft to launch from Mimas...) 2025 April 29 Titan Shadow & Saturn Ring Crossing Only every 15 years for a period of about 10 months...& only once every 16 days during those months... observers from (the dark side of) Earth may see Titan's ~1 arc second shadow take about 4 hours to transit the clouds of Saturn... 1 arc second is about the same apparent size as Io's much more frequently visible shadow transits of Jupiter -- visible even via a 80mm refractor with good optics & high magnification eyepieces...while such small optics can not actually resolve 1 second of arc, they can resolve the contrast of the reduced light region of the shadow as a visible 'gray dot'...the larger the scope the darker the dot... The evening of 2025 January 23 (a few nights from now...thus this post ;-) is Europe's last opportunity this 15 year cycle to watch a Titan shadow transit during twilight/dark: KSP 2025 Jan 23 Titan Shadow Transit Summer of 2025 will provide several pre-dawn opportunities for views of the Titan shadow transits from North America... With Principia, the time is effectively the same as Earth Universal Time commonly used in astronomy. And the view in KSP is "at the celestial body", so around the time of these mentioned events Saturn is about 1h 20min light distant from Earth...so Earth sees the shadow Transit event 1h 20 minutes later than the time observed in KSP: Current Light travel time delay Saturn to Earth: Left = view & time(UT) from Earth, Right = view & time from near Saturn So much better than what could be done with a Commodore 64 ;-) P.S. of course while time warping KSP from 2021 to 2025, Val decided to enjoy a view of the 2024 April Solar Eclipse: LEFT: Val viewing the KSP 2024 April 8 Solar Eclipse vs Right: IRL Here is a link to the Principia RSS KSP save where Val is viewing the 2024 April 8 eclipse...from there you can timewarp to any of the 2024-2025 Titan shadow Transits which are about every 16 days starting approx. 2024 Nov 20 20:00UT...note: this save will load fine without modifying your RSS initial state: https://drive.google.com/file/d/1DBXGQhTurbqG18yZmcP0v77nWAorrlWR/view?usp=sharing

I support @ShadowZone 's idea: Release KSP2 colonies, alpha etc work so far on a beta branch(es)

Happy to continue the discussion over at my thread...I'd be delighted to try to take a look at a copy of your NRHO save & see if I can workout a decent 'sanitize a Principia save' process...easiest for me would be if you create a copy of that save then in that copy via tracking station remove all but the relevant craft (but is that is difficult I can also edit the copy of the original save directly at my side). Having the actual .craft file as well would also enable me to ID the parts/mods I/others would need to load for that specific craft.

14 days...You did well then with Earth-Moon L2... also, if you come up with Principia saves that have an orbit which you find particularly interesting, to help others tinker & explore, you are welcome to share such save files over at the forum thread I mentioned in this earlier post: https://forum.kerbalspaceprogram.com/topic/162200-wip181-191-1101-1110–2-1122–5-principia—version-‎‎کاشانی-released-2024-05-08—n-body-and-extended-body-gravitation/?do=findComment&comment=4301119

@Krazy1 fyi...I'd be happy to hear what you observe with next month's Principia release...if you have not already, I suggest checking out the interesting discussion at #3230 and consequent changes at #3805

NASA SRC EDL video links to interesting moments:

Thank you for sharing those great gif & png! Remarkable & inspiring to me that a collection of very capable & dedicated humans have the skills & team work to design & build & navigate a machine to a tiny aggregate pile, where even solar radiation/particles observably alters orbits, effectively put a 'mosquito' in orbit around a 1 ton sphere (ok I get that probably means nothing to anyone else but is was a running joke my peers & I had in one physics class eons ago...), adapt to challenges, collect a sample, & send that sample on a collision course with Earth...due for arrival in Utah in about 40 hours...

Useful current "OSIRIS-REx Sample Return" links https://blogs.nasa.gov/osiris-rex/tag/sample-return/ https://eyes.nasa.gov/apps/solar-system/#/sc_osiris_rex Link for the scheduled Sept. 24 NASA live stream (I'm one of the 40 'waiting' so far, so can you ;-): :-) Fantastic 1st mission...looking forward to re-entry and future photos of asteroid Apophis from the extended mission OSIRIS-APEX (OSIRIS-Apophis Explorer)!

Hi blackrack, Thank you for these remarkable shaders! The mod Principia alters the coordinate system in the way describe below (key excerpt: "original x axis will become the y axis when |body| is the main body, and the |initialRotation| will be correspondingly increased by 90°." ) & indeed, when used in conjunction with Principia, the Singularity blackhole shader appears to me to visually display the part of the skybox 'that is 90 deg to the right'. For example, with Principia when looking at a Singularity black hole via the tracking station, if I align the view such that the 3 belt stars of Orion of the skybox show up close to centered in the 'view of the blackhole', then in order to see the actual 3 belt stars in the skybox I would need to rotate the tracking station camera/view 90 deg to the right. Principia Singularity Coordinate Interaction Do the shaders happen to be coded in a way where I might in one or a few config file(s) locations tweak a few values in order to align the rotation/coordinate system expected by the shaders to align/compensate for the orientation change that Principia makes (described below)? Or any other suggestions you may have regarding what may be occurring based on what you see in the screenshot provided above (e.g. perhaps I would also need to adjust some values in a Scatterer config, etc...)? Thank you! https://github.com/mockingbirdnest/Principia/blob/d80ebd378097e63f9dc1465380596619a05b910a/ksp_plugin_adapter/config_node_parsers.cs#L78

I am very interested in the version you are working on mentioned over in the Principia issues #3719, am I correct that version is still in process? Thanks!

Thank you! for the new reference frame & orbital plane equipotential line plot, especially the EML... For anyone who has not yet made a KSP GameData with Principia: fyi...this is an excellent addition to Principia & combined with RSS is helpful for exploring Lunar DROs as well as the planned NRHO of the upcoming Lunar Gateway DSL & SLS Artemis missions... Broken original NASA link: ESA, JAXA, NASA Gateway station DSL & SLS Artemis III Lunar NRHO Broken original NASA link: Forum Thread with saves & details DRO 'Lunar Retro Square Orbit' (EML frame) Conceptual 'surface' represented by the EML equipotential plane: Pink shows approx. 'Retro Square' path DRO 'Lunar Retro Square Orbit' 18 years (MCI frame) AP distance adjusts the corner sharpness of the 'Retro Square'

Principia has added a helpful new reference frame with the option to display equipotential lines for the sum of forces associated with gravity & rotation: (for clarity, I have added in yellow text the 'approximate' locations of the L points...these are _not_ shown in game) Because of the shape of the Moon's orbit around Earth, these equipotential lines do oscillate slightly with time in this frame relative to the projected craft path = fuchsia line... perhaps most visibly in the L4-L5 axis...yellow bars help reveal the shift in the animation below... so, keep in mind that the craft will end up over time, e.g. time warping the craft from AP to AP, appearing in a slightly different location 'of the equipotential lines' than suggested just by the fuchsia line simply because the equipotential lines are for the current time not the 'various future times' represented by the fuchsia line: Useful for the explorations suggested in the prior posts. Named 'EML' in the case of the Earth-Moon System, this new frame can help you to further refine the Retrograde Moon Square Orbit: An example KSP 1.12.3 Principia RSS flight plan to improve the Retro-Square Orbit: FlightPlanImproveMoonRetroSquare.sfs An example revised KSP 1.12.3 Principia RSS Moon Retro-Square: BetterMoonSquare18years.sfs Here is a second MCI (Moon Centered Inertial) frame animation showing the orbit over years 7 to 18, that continues the animation of years 0 to 7 shared in the original post. Clarification: the Earth is traveling along the blue-ish arc counter-clockwise. Visualizing Sum of Gravity & Rotation Potential: Pink loop = path of the 'Moon Retro Square" What Makes Lagrange Points Special Locations In Space (youtube) The Principia post announcing the new reference frame: I've updated the original post with various NASA Artemis missions links. Posts with interesting revisions or new saves exploring related orbits are welcome, please share them via link(s)!

fair in my book ;-) Also, I would be grateful for any tips on how to use the KK 'worker kerbals'...when we click the hire button we just get a NRE (we are using KSP 1.12.3 in sandbox games for now)...is there some specific sequence of things we need to do to be able to hire 'worker kerbals' from a given building configured with barracks with which to populate the research observatories? Thanks!

@Corax Thanks for the above from the post of yours on the other thread (link) this is very helpful info...Are you aware of any more documentation about the barracks (I could not find any in the KK wiki and your post seems the most enlightening when searching the forum for 'barracks'). In KSP 1.12.3 I changed one building to have barracks, however I just get a NRE each time I click on 'hire'...perhaps there is another step I have missed? KK 'Hire' NRE