Study: Crooked proto-planet got its shape from 2 huge collisions

02/14/2013 | Nature (free content)

Vesta, a lopsided asteroid orbiting between Mars and Jupiter, may have gotten its unique shape after being slammed twice by space rocks, causing it to lose most of its southern hemisphere, according to a study published in the journal Nature. Scientists used computer simulations to recreate the theory of the two collisions. Other scientists, however, don't buy the conclusion, saying that some evidence is inconsistent with the simulation.

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