Dwarf Planet Ceres: A Weird World Of Ice Volcanoes, Mud Oceans
NASA's Dawn spacecraft is set to begin orbiting the dwarf planet Ceres next month, and a new series of simulations indicate that it may find a strange world of ice volcanoes and a thin frozen shell covering a mud ocean that might harbor life.
Triton's Surface. This color photo of Neptune's large satellite Triton was obtained on Aug. 24 1989 at a range of 530,000 kilometers (330,000 miles). The resolution is about 10 kilometers (6.2 miles), sufficient to begin to show topographic detail. Credit: NASA