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Science 3 March 2000:
Vol. 287. no. 5458, pp. 1570 - 1571
DOI: 10.1126/science.287.5458.1570
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News of the Week

ASTROPHYSICS:
WIMPs at Last? Or More Wimpy Sightings?

Adrian Cho

Researchers from the Dark Matter experiment at Gran Sasso National Laboratory in Italy reported on 25 February that the number of heavy neutral particles entering their underground detector varies slightly with the seasons. The result, they say, proves that the Milky Way galaxy twirls in the midst of a gigantic cloud of Weakly Interacting Massive Particles (WIMPs), the leading candidate for the "dark matter" thought to account for 90% of the universe's mass. But physicists conducting the Cold Dark Matter Search at Stanford say they see no evidence of the particles.

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