About 18 months ago, we discussed a mysterious “dark flow” that was seen in early releases of the data from the Wilkinson Microwave Anisotropy Probe data. At that time, we remarked that it was little ...

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A: When photons scatter off electrons moving toward us, the photons gain energy; when photons scatter off electrons moving away from us, they lose energy. This effect is called the kinematic ...

The puzzling migration of matter in deep space — dubbed "dark flow" — has been observed at farther distances than ever before, scientists have announced. Subscribe to read this story ad-free Get ...

WASHINGTON — 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 ...

There is a force called “dark flow” that exists outside our universe, and it’s tugging several galaxy clusters at 2 million mph toward an empty spot in space between Centaurus (pictured) and Vela.

The puzzling migration of matter in deep space ? dubbed"dark flow" ? has been observed at farther distances than ever before,scientists have announced. Distant galaxy clusters appear to be zooming ...

As if the mysteries of dark matter and dark energy weren't vexing enough, another baffling cosmic puzzle has been discovered. Subscribe to read this story ad-free Get unlimited access to ad-free ...