Mercury
 

Sun-scorched Mercury is only slightly larger than Earth's Moon. Like the Moon, Mercury has very little atmosphere to stop impacts, and it is covered with craters. Mercury's dayside is super-heated by the sun, but at night temperatures drop hundreds of degrees below freezing. Ice may even exist in craters. Mercury's egg-shaped orbit takes it around the sun every 88 days.

Recent News:
MESSENGER mission complete
Mission controllers at the Johns Hopkins University Applied Physics Laboratory (APL) in Laurel, Md., confirmed toda ...
Mercury mission closer to launch
A UK-built instrument, designed to unlock the secrets of Mercury's surface, has been shipped from the University of Leic ...