PB666

Old ringo. A movie about an aging rock star as he tries to stay relevent whike all his peers are great grandfathers and lily-food.

None, four body problem. They would eventually reach an elliptical orbit that would decay in the atmosphere, collide with orher satillites and the pieces would decay, simply decay, or if in gso would be drawn into a exiting orbit.

https://en.wikipedia.org/wiki/LEROS 318 sec Hydrazine / mixed oxides of nitrogen. The burn of Juno’s 645-Newton Leros-1b main engine began on time at 8:18 p.m. PDT (11:18 p.m. EDT), decreasing the spacecraft’s velocity by 1,212 mph (542 meters per second) and allowing Juno to be captured in orbit around Jupiter. Soon after the burn was completed, Juno turned so that the sun’s rays could once again reach the 18,698 individual solar cells that give Juno its energy.

http://home.cern/about/updates/2016/07/lhcb-unveils-new-particles Actually since 2007, but this links displays that they have recently discovered 3 new types. All seem to have antimatter components, though they did not discuss stability.

bone

Diborane is actually a gas that can be used as a fuel, its very unstable though, more so than hydrazine. https://en.wikipedia.org/wiki/Diborane And you need an oxidizer. ISP is pretty decent given the mass, and you don't need an igniter, its does that all by itself in the presence of a trace of water.

made from the skins of snakes. There's a nice tunnel through the mountain . . . . .

http://www.bbc.com/news/science-environment-36676063

http://scienceveda.com/a-creepy-sound-recorded-at-jupiter-by-the-juno-spacecraft/

https://news.cnrs.fr/articles/solved-the-mystery-of-the-martian-moons

Banned for using any combination of letters that produce the nasty sounding planet.

Whose guest, i dont remember inviting any aliens. So alien civilizations comes and settles in our late heavy bombardement period, not very smart aliens.

When one talks about archeology and paleontology in a statistical context their are tangible and intangible aspects. So for instance, if the civilization was of dinosaurs they would be rather easy to detect because the long bones are so massive, forces that cause demineralization as part of ubiquitous calicium turnover last long enough for the bone to often end up deep in a non-biologically active layer where fossilization will preserve them and where gnawing animals lack access. This is a tangible aspect, and we can think of freeways and the concrete foundations of skyscrapers in the same context, in the case of the second, for example many have footings 30 to 40 feet under the lowest floor layer in a basic dead zone where compaction is so high oxygen and nutrient flow is basically zero. We have detected many species much smaller than humans going back tonthe cambrian, thats 650 million years and the fact we don't detect things earlier is not do so much to our techniques or land masses, but to the lack of vertebrates and infrequency of shell forming animals. There are many areas of the world, for example the back yard were i grew up, you have a rock in a trech you are digging, you pry it out of the ground often busting it, right in the middle will be a massive bivalve shell, its kind of hard to miss the evidence for bivalves even if they are mot as big as dinosaurs there were just so many of them. Thats another tangible. So we have two things, rather large long bones and lots of chances to be fossilized. That places humans on the scale somewher between a smaller dinosaur and bivalves for being detected, paleontologically speaking. And archaeologically speaking at the top of detectability, above amber forming trees and the middens of burrowing animals, and caches of cave dwelling predators. So we have 3 big detection worthy tells. The we can talk abou intangibles. How can one have an intangible tell. Well it works like this, if we look at the haploid DNA of eucaryotes we can do coalescence analysis using the 2N rule to tell population size. This allows us to basically see the size of the human population back about 100 to 200 thousand years ago, with X-linked DNA its a litle bit more difficult but its posdible to see back almost a million years ago. Human population, including the various late achaic homo sapiens were a part of a numerically small population to about 60,000 years ago, after which size grew to beyond an extent which no longer obvious limitation to the growth of mtDNA diversity. The population constraint on diversity was so obvious it was pointed out by Brown in 1980s that humans populations look, in terms of diversity, like a small subpopulation of another ape species. And yet from the period from a million years ago to 60,000!years ago we find lots of archaeological evidence, From homo erectus there are stone axes is Africa, the Bose formation in china. From hiedlebergensis there are eraly european stone tools, from neandetals there are a great number of lithic artifacts from the classic and levantine associated periods. There is something like 500 physical neandertalindividuals represented by 'fossile'record despite the fact that the genetics suggest the entire population size was below 10,000 individuals for most of the time Neandertals existed. So we can intangibly argue that even primative humans with a much lower archaeolical footprint than ourselves left a visible footprint. Even before this we have bith archaeology going back 2.6 million years and bones delimited ny ardipiticus ramidus from 4.5 to less than 6 million years with White concluding that the chimp human most recent common ancestor should be in that 6 to 8 million year range. what are the comparables? We actually have a good one believe it or not. Chimpanzees are a diverse population of apes currently represented by two named species with trivial interbreeding and one species with three subspecies. Mitocondrial DNA diversity goes suggest a rather large population for the last 2 million years, a population in the millions, a magnitude or more larger than homo over most of its existence. Even if we assume a MDT of 5 million years as V. Sarich suggests when one looks at the paleontology and achaeologicgy of pan from the prehistoric period going back to 4 million years there is virtually nothing. There are a few finds that might be chimp, but nothing definative. The chimpazee paleontological tell is less than 1/100 that of humans given predicted population size, its about par with the apes. For ancient gorillas we only have found teeth. Humans have an powerful intangible tell about them, we bury our dead, pack them in shell middens, place them in caves, or bury them in metal boxes; chimps don't do that. This aspect is also see for desinovans, neandertals and homo erectus. We we bury them we often add achealogy to go along with it, a favorite pet, a favorite axe, or some other trinket. This intangible aspect of our nature makes it very difficult to miss our presence in the archealogical record, we stand out like a big red flag, even in our most primative form we stand out above like species. These burials are everywhere, LM3 australial, Kiazuka in japan, comparables from late paleolithic in France, Bog men of Ireland, Liang bua in Indonesia, Narmada India, Dmanisi georgia, Shenadar Iraq. Whats even more telling is we often bury our dead in ways that make their bones stand out. There was once a tradition of defleshing humans and then burying them. This gets tid of alot of a ids that degrade bones,mwith or without acid burying humans in a shell mound,mthe shells scavenge the acid making for a great bone preservation method. Our artifacts also make for interesting tells. For example, earthenware pottery of the jomon makes for great presentation. You find pottery from 4000 to 8000 years of age in japan that looks almost like the day it was made. There was a cypress cover i saw from japan that was 2,000 years old by radiocarbon, did not yet have a patina on it. But then you add glazing and refiring of the pottery, for example the large ceremonial platters used by Japenes during gatherings survived the Nagasaki atomic blast, blistered on one side and in perfect condition on the other. The density of sites in some areas are amazing, in both Japan and Oaxaca its hardcto build without stumbling onto a site. Even more compelling is that one of the primary features of ancient geology and that is the disruption of layers. We have heard of blind faults, that is a feature in the recent geology that we cannot see. In Japan it might be called blinded faults. On at least two occasions humans have actually buried the faults and forgot about them. This is not hard to miss once you cut a trench through the fault line, you see a fault (noted by the position of a bedrock layer) move by three feet and you have four feet of very nice top soil on one side and one foot of soil on the other. Intensive agriculture is hard to miss, it perturbs the natural layering, in areas such as nothern carolina it depletes the soil of humus, evetually depleting the soil of iron and otger pigmenting molecules. In Asia it would be difficult to miss a trench through a volanic overlay where, underneath you have terracing and fossilized rice stubble. So the basic answer here is this, humans are not just some species of pack rats that leaves the occasionsl middens, or some beaver that builds wooden dams and lets them rot. We are the kings of Earth modifications. We disrupt just about every aspect of natural geological evolution you can think of. You can see our activity from space, the great wall? no? Look at the mouth of the Mississippi. Look at the netherlands, how aboit the Panama canal. Still not enough, lets throw in mega fauna extinctions, surely that would cause a second look. What packrat midden can survive a nuclear blast? Yeah, the answer is that there were no previous advanced civikizations and, no; we would not miss their archaeology.

Polyethylene of the tyoe used for milk cartons can last indefibitely in an anaerobic environmet. Your interstate highway with 8 inch slab proprly buried, easily a few billion years under the right conditions, Some mountains get worn away others get buried,mit depends whether you end up in an uplift or a sink.

Trash, freeways, foundations of skyscrapers, quarries, megaweapons (e.g structures like wwii germany left behind), waterways, canals, megaliths of varoius cultures, As one paleoanthropologist put it, humans are the most exploitive, manipulative, resource using intensive species on the planet. Even the most primarive neolithic societies have left evidence behind, lkb, longhouses, cairns, la hoguette, wavy-line, dotted wavy-line, fukui cave, oyster middens with entomb remains, both in europe, new world and japan, blombos cave . . . . . . . . (several pages of examples of rediscovered artifacts). . . . . . . . . Not mad, the answer is just no, its highly improbable for a culture as advanced and globally populus to exist without leaving rather notable archaological evidence.

Banned for posting [fill in the black]

Nope, sorry, not valid I clicked because i saw something danger and as everyone kniws when your told not tondonsomething dangerous.

One word, really: no

Low brow

Glyph

Not granted, VAB needs a sun roof, cheater! The kerbol transiting interstellar asteroid was traveling too fast to allow a direct intercept, instead Jeb proposed ________________________________ followed by a _________ at the asteroid and a _______________ to land. Things did not go as well as planned and Bill and Phil are now __________________________.

http://www.sciencealert.com/scientists-have-built-a-microbial-fuel-cell-that-works-without-external-power This is the most unlikely technology, but ...........nah its a no-go.

You're just upset because my avatar is more conspiracier than yours.

http://www.nasa.gov/mission_pages/juno/overview/index.html