
NASA's Mars Reconnaissance Orbiter took images of a fresh, 6 meter wide crater on Mars on Oct. 18, 2008, left, and on Jan. 14. The impact exposed water ice from below the surface. The change between the earlier image to the later one resulted from some of the ice sublimating away during the Martian northern-hemisphere summer, leaving behind dust that had been intermixed with the ice.
By KENNETH CHANG
Published: September 28, 2009
If, in 1976, NASA’s Viking 2 lander had been able to dig about four inches deeper into Mars, it would quite possibly have made an important and surprising discovery: water ice far from the polar regions and not far below the surface. More
no subject
Date: 2009-09-29 11:52 am (UTC)Nor any drop to drink.