Fermi Detects Gamma-ray Puzzle from M31 (video) NASA/Goddard Space Flight Center Share Print E-Mail Loading video... Caption NASA's Fermi telescope has detected a gamma-ray excess at the center of the Andromeda galaxy that's similar to a signature Fermi previously detected at the center of our own Milky Way. Watch to learn more. Credit NASA's Goddard Space Flight Center/Scott Wiessinger, producer Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.