Wrenching Findings: Homing in on dark energy

10:55am, February 25, 2004

Something is pulling the universe apart, causing galaxies to flee from each other at an ever-faster rate. Since 1998, when astronomers discovered this bewildering state of affairs, theorists have been struggling to comprehend the mysterious source driving the runaway expansion. Now, researchers have taken one of the first steps toward identifying this bizarre influence, often known as dark energy.

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