The Warped Side of Dark Matter

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Science  20 Jun 2003:
Vol. 300, Issue 5627, pp. 1894-1896
DOI: 10.1126/science.300.5627.1894

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In recent years, research has confirmed that the luminous universe--our sun, our galaxy, and everything that shines--makes up but a wee bit of all there is. Instead, the strange new recipe calls for more than one-quarter "dark matter" and two-thirds "dark energy." Weak gravitational lensing, a subtle distortion of all distant galaxies, promises the most direct way of mapping the universe we can't see.