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 ...

The universe is a far stranger place than most of us know. From giant diamond stars to exoplanets coated in hot ice, every day, the list grows longer. Sometimes, these oddities can be explained within ...

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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 ...

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 ...

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 ...

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Distant galaxy clusters mysteriously stream at a million miles per hour along a path roughly centered on the southern constellations Centaurus and Hydra. A new study led by Alexander Kashlinsky at ...

As if the mysteries of dark matter and dark energy weren't vexing enough, another baffling cosmic puzzle has been discovered. Patches of matter in the universe seem to be moving at very high speeds ...