SpaceNASA's Messenger probe crashes into Mercury After exhausting its fuel spending four years orbiting the nearest planet to the sun, Messenger has crashed, creating a 16-metre crater ¿ìè¶ÌÊÓÆµ
SpaceDwarf planet Ceres might have right stuff for life NASA hopes Dawn mission can answer the big question: could life lurk in icy volcanoes on Ceres, the asteroid belt's biggest resident? ¿ìè¶ÌÊÓÆµ