On April 30, 2015, NASA's MESSENGER mission came to an end when the spacecraft intentionally crashed into the surface of ...

CAPE CANAVERAL, Fla, May 7 (Reuters) - New results from NASA's now-defunct Messenger spacecraft show Mercury's magnetic field switched on about 4 billion years ago, scientists said on Thursday.

Mercury is a world of contradictions, where extreme heat coexists with frozen ice. This video explores the planet’s bizarre ...

LOS ANGELES - Despite its proximity to the sun, portions of Mercury appear to be covered in ice, scientists said Thursday after analyzing 20,000 new images of the solar system's smallest planet. The ...

Add Yahoo as a preferred source to see more of our stories on Google. For decades, scientists believed lithium might be hiding in Mercury’s ultra-thin atmosphere, or exosphere, but every attempt to ...