"NASA's Fermi Mission Observes Absence of Gamma Rays from Nearby Supernova"

NASA's Fermi Gamma-ray Space Telescope did not detect high-energy gamma-ray light from the nearby supernova SN 2023ixf, challenging previous estimates about the energy conversion of supernovae into cosmic ray acceleration. This absence of gamma rays prompts astrophysicists to investigate the underlying acceleration mechanisms and environmental conditions, shedding light on the mysterious sources of cosmic rays in the universe. Further observations, simulations, and models based on this event, as well as studies of other young supernovae, will aid in unraveling the enigma of cosmic ray origins.