Mystery Gamma-Ray Glow ‘Solved’

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‘We’re not 100 % confident that this is the final answer’

The steady glow of high-energy gamma-ray, gamma radiation, light that spreads across the cosmos has puzzled astronomers for decades. One team of researchers thinks it has the best explanation yet for the source of this strange emission.

After observing the universe with Fermi Gamma-ray Space Telescope for six years, scientists with the mission say the majority of the gamma-ray glow they have seen to be explained by objects already known to science. If there are any as-yet unknown sources out there, their contribution to the glow would be very small, scientists say.

“We have a very plausible story. We’re not 100 % confident that this is the final answer, but it really constrains what other exotic possibilities could be out there,” said Keith Bechtol, a postdoctoral researcher at the University of Chicago and a member of the Fermi collaboration who worked on the analysis.


Isaac, YJA Astronomy Correspondent (Primary)

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