Nasa astronomers says signal coming from outside our galaxy is 'unexpected and as yet unexplained'

Tech Insider
This artist's concept shows the entire sky in gamma rays with magenta circles illustrating the uncertainty in the direction from which more high-energy gamma rays than average seem to be arriving.
An artist's concept shows the entire sky in gamma rays with magenta circles illustrating the uncertainty in the direction from which more high-energy gamma rays than average seem to be arriving

NASA's Goddard Space Flight Center

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