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Mercury in the spotlight

Planetary scientists have discovered water ice at Mercury’s poles that may have survived for billions of years, but other parts of this world seem surprisingly young.
RELATED TOPICS: MERCURY
MESSENGER at Mercury

NASA’s MErcury Surface, Space ENvironment, GEochemistry, and Ranging spacecraft — better known by its acronym MESSENGER — logged some 4.9 billion miles (7.9 billion kilometers) during its nearly seven-year journey to the solar system’s innermost world. Following two flybys in 2008 and another one in 2009, the probe settled into orbit around Mercury in March 2011.

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