NASA scientists have found a powerful new gamma-ray signal coming from outside our galaxy. AdvertisementNASA astronomers have discovered an unexpected "signal" coming from outside our galaxy, which they can't explain. The scientists were analyzing 13 years of data from the Fermi Gamma-ray Space Telescope when they noticed the mysterious signal. NASA's Fermi Gamma-ray Space Telescope, illustrated here, scans the entire sky every three hours as it orbits Earth. NASA's unexpected discovery could help astronomers confirm or challenge ideas about how the dipole structure is created.

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Persons: —, Francis Reddy, NASA's, Alexander Kashlinsky, Fermi, Chris Smith, Chris Shrader, Pierre Auger, Fernando Atrio Organizations: NASA, Service, Fermi, NASA's Goddard Space Flight, University of Maryland, American Astronomical Society, Goddard Locations: Argentina