Just a photo of a half-mile tall Martian dust devil, snapped by the Mars Reconnaissance Orbiter.
posted by Chinese Jet Pilot on Mar 7, 2012 - 13 comments

Physics! (SLYT via)
posted by curious nu on Nov 10, 2011 - 38 comments

First Orbit. "On 12th April 2011 it will be 50 years to the day since Yuri Gagarin climbed into his space ship and was launched into space. It took him just 108 minutes to orbit Earth and he returned as the World's very first space man. To mark this historic flight we have teamed up with the astronauts onboard the International Space Station to film a new view of what Yuri would have seen as he travelled around the planet. Weaving these new views together with historic voice recordings from Yuri's flight and an original score by composer Philip Sheppard, we have created a spellbinding film to share with people around the World on this historic anniversary." [more inside]
posted by homunculus on Apr 11, 2011 - 32 comments

Year On Earth breaks it down, explaining the complicated mechanics involved in trying to determine how long a year really is, why seasons and ice ages happen, and how not all years are created equal.
posted by loquacious on Jul 5, 2010 - 22 comments

Do gravity holes harbour planetary assassins?
posted by Artw on Feb 21, 2009 - 24 comments