NASA Detects Mysterious 'Unexpected' Signal Coming From Outside Our Galaxy

NASA astronomers have discovered an unexpected "signal" coming from outside our galaxy, which they can't explain.

Related Keywords

Argentina ,United States ,American ,Chris Shrader ,Francis Reddy ,Alexander Kashlinsky ,University Of Maryland ,Goddard Space Flight Center ,American Astronomical Society ,Goddard Space Flight Center Chris Smith ,Fermi Gamma Ray Space Telescope ,Gamma Ray Space Telescope ,Space Flight Center ,American Astronomical ,Astrophysical Journal ,Pierre Auger Observatory ,Fernando Atrio Barandela ,