Author: Emily Conover / Source: Science News
An astronomical calling card, tentatively attributed to mysterious dark matter, seems likely to be due to a more mundane source.
An unexplained glow of high-energy light from the center of the Milky Way, first spotted in 2009, raised scientists’ hopes of better pinning down dark matter (SN: 11/20/10, p. 11). That unidentified substance has been detected so far only via its gravitational tug on other matter.
Physicists thought that this excess of energetic light known as gamma rays might be released by…
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