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Cosmic Dark Flow Detected Billions Of Light Years Away

Using data from NASA's Wilkinson Microwave Anisotropy Probe (WMAP), scientists have identified an unexpected motion in distant galaxy clusters. The cause, they suggest, is the gravitational attraction of matter that lies beyond the observable universe.

Cosmic 'Dark Flow' Detected Across Billions Of Light Years

Using data from NASA's Wilkinson Microwave Anisotropy Probe (WMAP), scientists have identified an unexpected motion in distant galaxy clusters. The cause, they suggest, is the gravitational attraction of matter that lies beyond the observable universe.

Scientists Detect "Dark Flow:" Matter From Beyond the Visible Universe

Galaxy clusters like 1E 0657-56 (inset) seem to be drifting toward a 20-degree-wide patch of sky (ellipse) between the constellations of Centaurus and Vela. Credit: NASA/WMAP/A. Kashlinsky et al.

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