News of the WeekAstronomy

Solar System Kicks Up Its Own Dust

Science  01 Mar 2002:
Vol. 295, Issue 5560, pp. 1621
DOI: 10.1126/science.295.5560.1621a

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Summary

An alien civilization might be able to deduce the existence of planets in our solar system by examining the infrared light emitted by a ring of dust around our sun. A team of astronomers argues that the telltale dust could not have formed without planets, and they propose that stars surrounded by similar rings may be a good place to search for extrasolar planets.

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