Earthlings might be treated to a dazzling celestial display this fall as Comet ISON makes a suicidal plunge toward the sun. But NASA's rovers and orbiters at Mars will get a glimpse of the icy wanderer first.
Earthlings might be treated to a dazzling celestial display this fall as Comet ISON makes a suicidal plunge toward the sun. But NASA's rovers and orbiters at Mars will get a glimpse of the icy wanderer first.