View Full Version : Discussion: Astronomers Find Five Double ...

2003-Sep-26, 09:21 PM
SUMMARY: According to researchers from Cornell University, binary asteroids - where a small asteroid orbits a larger one - are actually pretty common in Earth crossing orbits. In fact, they think that gravitational interactions with the Earth might actually help to cause the arrangement. The researchers estimate that 16% of asteroids larger than 200 metres in diameter have a companion - so far they've found five using two of the world's largest radio telescopes.

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