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Jun 19, 2014 12:43 PM ET // Ian O'Neill
A vast and powerful space weather event has been observed at the solar system's innermost planet for the first time. Continue reading →
Mar 24, 2014 12:00 PM ET // Amy Shira Teitel
It's been 40 years since we first saw Mercury up close, and the flyby raised more questions than it answered.
Mar 16, 2014 02:00 PM ET // Larry O'Hanlon
An obsolete theory of the Earth works better than ever on Mercury, where new data reveals how much the hot little planet has shriveled since it first formed.
Sep 19, 2013 09:40 AM ET // Ian O'Neill
NASA's MESSENGER probe has been in orbit around Mercury since 2011 and has returned photos of some really strange looking objects.
Sep 30, 2011 03:05 PM ET // Jason Major
NASA's MESSENGER mission is turning up more questions than answers as it photographs strange recently-formed features on Mercury's surface.