Hopes Dim That Gamma Rays Can Reveal Dark Matter

Hopes Dim That Gamma Rays Can Reveal Dark Matter
AP Photo/NASA Goddard Space Flight Center

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.

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