Mercury: Images of a Violent Planet

NASA's MESSGENGER spacecraft probes innermost planet in the solar system.

Mercury: Images of a Violent Planet

Mercury
Mercury
Mercury
Mercury
Mercury
Mercury
Mercury
Mercury
Mercury
Mercury
Mercury
Mercury
Mercury
Mercury
Mercury
Mercury
Mercury
Mercury
Mercury
An image of the planet Mercury captured during a January 2008 flyby by the Mercury Surface, Space Environment, Geochemistry and Ranging (MESSENGER) spacecraft. The image shows that volcanoes were involved in the formation of the planet's plains. (REUTERS/NASA/JHUAP/ Arizona State University/Handout)
ABC News on Facebook