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Scientists Discover Reason for Large Rocks Covering Asteroids

What goes for Brazil nuts goes for asteroids, says a team of scientists. Detailed photographs of the asteroid Itokawa, taken in 2005 by a Japanese spacecraft Hayabusa, revealed that its surface is covered with many large rocks, most probably ejected by its volcanoes. But it looked like there were many more of those large boulders than the Itokawa’s craters could have spewed. A similar phenomenon was observed in 2001, on asteroid Eros. After conducting many simulations, scientists at...

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