An 'armchair astronomer' named David Martines has found something on Google Mars which he believes is some kind of space station. Allegedly, NASA is investigating the image. Another theory says that what he sees is a "linear streak artifact produced by a cosmic ray".
posted by anastasiav on Jun 6, 2011 - 104 comments

A British tabloid claims that NASA will today announce the probable presence of life on Mars. Planetary and atmospheric scientists from NASA's Mars program will address a press conference at 2PM EST, apparently about concentrated methane plumes that bloom and dissipate [pdf]. There was a false alarm about a similar briefing a few months ago; is this the real deal?
posted by Joe in Australia on Jan 15, 2009 - 129 comments

Fears that malevolent aliens will tune into this week's broadcast of The Beatles' song "Across the Universe" have been voiced by scientists.
posted by monospace on Feb 7, 2008 - 68 comments

Directory of UFO/aliens/crop circle videos. From the really lame fakes to the completely misinterpreted (watch the time counter) to the kind of neat to watch, but not exactly any sort of proof.
posted by Kickstart70 on Oct 14, 2006 - 19 comments

"clouds and even rain showers seem to have been spotted on Titan, Saturn's largest moon. Scientists have already labeled Titan a hot spot in the search for extraterrestrial life, and the new work adds to that enthusiasm." You bet it does.
posted by owillis on Oct 20, 2000 - 10 comments

Science on the cheap! Now this is cool. (more inside)
posted by Steven Den Beste on Aug 3, 2000 - 3 comments