Mercury, First Planet From the Sun: Latest Discoveries

Mercury is our solar system's smallest planet.
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Space History Photo: Little Joe 5B High-Q-Abort Test
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July 15th, 2014
A Mercury spacecraft lands in the ocean after launched from Little Joe in a High-Q-Abort test.
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Space History Photos: Astronaut John Glenn in a State of Weightlessness During Friendship
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June 30th, 2014
During the Friendship 7 mission, John Glenn experiences weightlessness.
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Did Huge Impact Shape Planet Mercury?
First high-resolution image of Mercury transmitted by the MESSENGER spacecraft (in false color, 11 narrow-band color filters).
July 6th, 2014
A colossal but glancing smashup with a roughly Earth-size planet could have stripped away much of proto-Mercury's rocky mantle, explaining why the tiny, sun-scorched world has such a huge iron core today, researchers say.
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Space History Photo: Cooper and Capsule on Deck
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June 9th, 2014
The Faith 7 Mercury Space Capsule is brought on board with Cooper still inside.
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Space History Photo: John Glenn OK
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May 15th, 2014
Astronaut John Glenn inspects artwork to be painted on his Mercury spacecraft.
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Wow! NASA Rover on Mars Sees Mercury Cross the Sun's Face (Photos, Video)
Mars Rover Curiosity Sees Mercury Cross Face of Sun
June 11th, 2014
NASA's Mars rover Curiosity has photographed Mercury crossing the face of the sun, marking the first time such a planetary "transit" has ever been imaged from the surface of a planet other than Earth.
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