SUMMARY: Astronomers have found that a nearby star, Tau Ceti, is surrounded by 10 times as many asteroids and comets as our own Solar System. Even if there are planets orbiting Tau Ceti, they would be unlikely to support life because of the frequent and devastating impacts by these objects. This discovery will help astronomers narrow down their search when looking for distant worlds that may support life; ones which have a small number of comets and asteroids.

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