https://science.nasa.gov/missions/fermi/nasas-fermi-detects-surprise-gamma-ray-feature-beyond-our-galaxy/
Astronomers analyzing 13 years of data from NASA’s Fermi Gamma-ray Space Telescope have found an unexpected and as yet unexplained feature outside of our galaxy. “It is a completely serendipitous discovery,” said Alexander Kashlinsky, a cosmologist at the Uni…
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