September 30, 2008— NASA's Phoenix Mars Lander has detected snow falling from Martian clouds, and its soil testing shows further evidence of the planet's watery past, scientists say.
Welcome to the National Geographic video player.
You need the latest Flash Player version from Abode and a JavaScript enabled browser to view this site. Please click here to download the free flash player.
© 1996-2009 National Geographic Society. All rights reserved.