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Science 1 March 2002:
Vol. 295. no. 5560, p. 1621
DOI: 10.1126/science.295.5560.1621a
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News of the Week

ASTRONOMY:
Solar System Kicks Up Its Own Dust

Govert Schilling

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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Science. ISSN 0036-8075 (print), 1095-9203 (online)