Bright Chunks at Phoenix Lander's Mars Site Must Have Been Ice
Dice-size crumbs of bright material have vanished from inside a trench where they were photographed by NASA's Phoenix Mars Lander four days ago, convincing scientists that the material was frozen water that vaporized after digging exposed it.
发表于 2008-6-20 16:36:50
发表于 2008-6-20 17:54:43