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.
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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