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Originally posted by fieryjaguarpaw
They could find fossils of people on Mars and still invent some silly theory for it to be something other than life.
Methane -- four atoms of hydrogen bound to a carbon atom -- is the main component of natural gas on Earth. It's of interest to astrobiologists because organisms release much of Earth's methane as they digest nutrients. However, other purely geological processes, like oxidation of iron, also release methane. "Right now, we don’t have enough information to tell if biology or geology -- or both -- is producing the methane on Mars," said Mumma. "But it does tell us that the planet is still alive, at least in a geologic sense. It's as if Mars is challenging us, saying, hey, find out what this means." Mumma is lead author of a paper on this research appearing in Science Express Jan. 15.
If microscopic Martian life is producing the methane, it likely resides far below the surface, where it's still warm enough for liquid water to exist. Liquid water, as well as energy sources and a supply of carbon, are necessary for all known forms of life.
On Earth, all forms of life need water to survive. It is likely, though not certain, that if life ever evolved on Mars, it did so in the presence of a long-standing supply of water. On Mars, we will therefore search for evidence of life in areas where liquid water was once stable, and below the surface where it still might exist today. Perhaps there might also be some current "hot spots" on Mars where hydrothermal pools (like those at Yellowstone) provide places for life.
A pair of NASA scientists told a group of space officials at a private meeting here Sunday that they have found strong evidence that life may exist today on Mars, hidden away in caves and sustained by pockets of water.
The scientists, Carol Stoker and Larry Lemke of NASA's Ames Research Center in Silicon Valley, told the group that they have submitted their findings to the journal Nature for publication in May, and their paper currently is being peer reviewed.
Originally posted by Phage
Science doesn't "pick a position". It investigates. It examines possibilites. As many as possible and practical.
Originally posted by Jim Scott
It can also mean that life originated on Earth, was ejected to Mars, then re-ejected to Earth.
My guess is that life will be found where there is liquid water.
Originally posted by Phage
reply to post by fieryjaguarpaw
The goof was mine.
Star Wars is not science fiction. It is fantasty.
Buckaroo Banzai is true.
[edit on 11/26/2009 by Phage]
Originally posted by Bluemcgee
I read this article earlier today. Didn't read anywhere it was proven. In fact, I took it as a maybe because the other explanation had been ruled out. Doesn't mean there's not a billion others.
Originally posted by Horza
reply to post by Phage
The original Mail Online article has been changed since it was originally published.
It did have much stronger language that suggested that the new evidence was a smoking gun.
In this light, you would forgive the OP for the title of this thread.
It may have been sensationalism on the part of the Mail, which is why they have changed it.
Does anyone have a copy of the original story published by the mail?
It would be interesting to compare the two.
[edit on 26/11/09 by Horza]