Friday, January 18, 2013

Exo-Asteroid Belts

Astronomers have found evidence of extensive asteroid belts around the stars Vega and Fomalhaut, two of the brightest stars in the night sky.  Vega, in fact, is second in brightness only to Sirius.

The belts also have gaps in them.  Astronomers think those gaps could indicate multiple planets could exist in each system.

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