Any Sufficiently Advanced Civilization is Indistinguishable from Nature.
posted by Brandon Blatcher on Mar 8, 2012 - 50 comments

Martian Life's Last Stand in the Trenches? "Scientists have found water-bearing deposits on Mars that are out of step with what was happening elsewhere on the planet, raising the prospect that the sites could have hosted Martian life's last stand."
posted by Fizz on Sep 28, 2011 - 27 comments

Dr. Hoover has discovered evidence of microfossils similar to Cyanobacteria in freshly fractured slices of the interior surfaces of the Alais, Ivuna, and Orgueil CI1 carbonaceous meteorites. The scientist's conclusion is that the fossilized bacteria are not Earthly contaminants but are the fossilized remains of living organisms which lived in the parent bodies of these meteors, e.g. comets, moons, and other astral bodies. The implications are that life is everywhere, and that life on Earth may have come from other planets.
posted by Surfin' Bird on Mar 5, 2011 - 150 comments

Dmitar Sasselov is an astrophysicist, Director of the Origins of Life Initiative at Harvard and a co-investigator of the Kepler space telescope project to find Earth-like planets around the Cygnus constellation and discover extraterrestrial life. But no matter how successful the Kepler project may be, it still won't answer the most fundamental questions of astrobiology: How diverse is life in the universe? If alien life exists, will it have Earthly DNA and proteins? Or will it run on something else? So Dr. Sasselov has decided to collaborate with two synthetic biologists, asking them to create a life form based on mirror-image versions of what we know as the essential building blocks of living things on Earth. [more inside]
posted by zarq on Dec 14, 2010 - 13 comments

Are plasma crystals alive? Cosmic dust can, in the presence of plasma, creates formations known as plasma crystals. An international team of researchers published a study in the Aug.14, 2007, issue of the New Journal of Physics (PDF here, abstract here) that indicates that these crystals may be more sophisticated than anyone realized. In simulations involving cosmic dust, the researchers witnessed the formation of plasma crystals displaying some of the elementary characteristics of life -- DNA-like structure, autonomous behavior, reproduction and evolution. [more inside]
posted by KokuRyu on Mar 26, 2009 - 48 comments

Source Of Geysers On Saturn's Moon Enceladus May Be Underground Water. Earlier this year the Cassini spacecraft detected organic material in the geysers of Enceladus. The question now is, how's the fishing?
posted by homunculus on Dec 10, 2008 - 53 comments

Is life possible even in the coldest depths of space? If so, this tough little guy has long been thought to be a good candidate. Now, finally, analysis of the Tardigrades (a.k.a. "water bears") exposed to open space as part of the TARDIS project is finally complete. So what's the verdict? [more inside]
posted by saulgoodman on Sep 9, 2008 - 39 comments

The "Great Filter" is a hypothetical barrier to explain why civilisations are so unlikely to progress to the point of inter-stellar colonisation that we have not encountered any in 40 years of looking. Maybe humanity has already negotiated the filter - as some massive evolutionary improbability - or perhaps it lies in our future as an almost-certain threat to our existence? We should hold our breath as we look for evidence of life on Mars.
posted by rongorongo on May 12, 2008 - 85 comments

Real robot drama is happening on Mars today. Spirit, racing for her life to find shelter before winter, injured and underpowered after four years of hard labor, may have made her most significant find yet. The broken foot she's dragged behind her for the past two years unexpectedly uncovered evidence of a once-wet Mars with conditions theoretically hospitable for primitive life.
posted by Chinese Jet Pilot on Dec 12, 2007 - 89 comments

Spacefilter: ESA telescope detects planet 20 lightyears away with a temperature between 0 and 40 degrees Celsius, dubbed "most Earth-like planet yet."
posted by goodnewsfortheinsane on Apr 24, 2007 - 104 comments

ESA scientists announced that a giant sea is hidden under the Martian surface. With discoveries like this and weird photos like this, how long can it be before we find conclusive proof of extraterrestrial life?
posted by borkingchikapa on Feb 21, 2005 - 30 comments

Life - a strong case for life on mars was presented sunday
posted by sourbrew on Feb 17, 2005 - 12 comments

Germs from Jupiter? Viruses from Venus? Nope, just live space-borne bacteria discovered floating around Earth. "Although the bugs from space are similar to bacteria on Earth, the scientists said the living cells found in samples of air from the edge of the planet's atmosphere are too far away to have come from Earth." (via waldo.net)
posted by carobe on Aug 2, 2001 - 8 comments

First Evidence of life coming from space. One third a ton a day raining down, according to these researchers.
posted by stbalbach on Jul 30, 2001 - 20 comments