Surprise Gamma-Ray Feature Detected Beyond Our Galaxy by Fermi Telescope
NASA's Fermi Gamma-ray Space Telescope has detected an unexpected gamma-ray feature beyond our galaxy, which is 10 times stronger than expected and located far from the cosmic microwave background (CMB) dipole. This discovery, presented at the American Astronomical Society meeting, suggests a link between the gamma-ray signal and ultrahigh-energy cosmic rays, both exhibiting similar magnitudes and directions. The findings challenge current understanding of astrophysical processes and may provide insights into the early universe.