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Science 29 March 2002:
Vol. 295. no. 5564, p. 2341
DOI: 10.1126/science.295.5564.2341b
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News of the Week

COSMOLOGY:
Cosmic Ripples Confirm Universe Speeding Up

Andrew Watson

Four years ago, cosmologists announced that the universe appears to be expanding at ever-increasing speed--and that a mysterious antigravity force must be doing the pushing. Now an international consortium of astronomers has confirmed the original finding by taking a completely different approach. The new research adds to the mounting evidence that ordinary matter alone cannot mold space into the geometry that cosmologists believe it has. Instead, many now believe, "dark energy" must be added to the mix.

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