NASA’s MESSENGER spacecraft is in the final days of an unprecedented and unexpectedly long-lived, close-up study of the innermost planet of the solar system, with a crashing finale expected in two weeks.
As MESSENGER heads into the last few weeks of its mission, it continues to reveal more information about unusual features on Mercury.
Engineers have found a way to buy some time for the MESSENGER spacecraft, which was due to end its four-year mission in March with a suicidal plunge.
The first-ever photos of water ice near Mercury's north pole have come down to Earth, and they have quite a story to tell.
Last week's lunar eclipse wasn't just a show for Earthlings, NASA's MESSENGER mission was also watching from 66 million miles away. Continue reading →
A vast and powerful space weather event has been observed at the solar system's innermost planet for the first time. Continue reading →
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.
Data acquired from NASA's MESSENGER probe suggest that Mercury used to have an ocean of molten rock. ->
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