NASA: Mysterious signal is enigmatic, perplexing
NASA mysterious signal: Detected by two NASA spacecraft, X-ray emissions of unknown origin could lend insight into dark matter, a mysterious substance thought to compose more than 80 percent of all matter in the known universe.
By Mike Wall, SPACE.com Senior Writer / June 26, 2014
Perseus Cluster is seen in an image that uses data representing more than 17 days of observation time over 10 years.
X-ray: NASA, CXC, SAO, E.Bulbul, et
Two spacecraft have detected a possible signal of dark matter, the mysterious, invisible stuff that makes up most of the material universe.
NASA‘s Chandra X-ray Observatory and theEuropean Space Agency‘s XMM-Newtonsatellite spotted a spike of X-ray emission coming from more than 70 different galaxy clusters. While the origin of the X-rays remains unclear at the moment, they could be generated by the decay of a certain type of dark-matter particle, scientists said.
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