Saturday, November 23, 2013

Martian Moon Origins

New Evidence Supports Asteroid Origin Of Martian Moon
PhysicsCentral.com (blog)
New research suggests that Mars' larger moon, Phobos, is likely an errant asteroid trapped by the planet's gravitational pull. Astronomers matched the chemical makeup of Phobos' surface to a meteorite that struck Canada, concluding that the Martian ...
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