- Jul 18, 2014New simulations show that Mercury and other unusually metal-rich objects in the Solar System may be relics left behind by earlier hit and run collisions.
- Apr 12, 2014More detailed data from MESSENGER shows that volcanoes exploded on Mercury for a substantial portion of the planet’s history. The findings suggest Mercury not only had volatiles but held on to them for longer than scientists had expected.
- Dec 2, 2012Data from NASA's MESSENGER spacecraft supports the hypothesis that the planet Mercury harbors abundant water ice in its permanently shadowed craters. The finding is helping astrobiologists understand how water may have been delivered to planets like Earth as the Solar System formed.
- Oct 9, 2012Tiny pieces of rock captured from the astroid Itokawa by the Japanese mission Hayabusa are now being analyzed. It is the first time asteroid samples have been returned to Earth, and they could help astrobiologists understand the origin of the Solar System.
- Mar 27, 2012By using a spacecraft to time the transits of the planet Mercury across the face of the Sun, scientists have measured the diameter of our star with unprecedented accuracy.