Mercury’s surface once exploded in volcanoes

By Science News Staff, 13:51 PM April 4, 2014

Guest post by Christopher Crockett

Volcanoes erupted on Mercury for billions of years, according to new images from the MESSENGER spacecraft.  The pictures, published March 28 in Journal of Geophysical Research: Planets, show ancient vents and ash scattered within craters between 1 billion and 3.5 billion years old, suggesting that the volcanoes exploded over a long period of time.

Sustained volcanism indicates that Mercury kept volatiles — compounds with low boiling points like water — for lon...

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