Cosmic rays are tiny bits of atoms racing by us — and even sailing right through our bodies — all the time. Physicists can’t figure out where they came from, but they have some wild hypotheses: | Vox

Awesome Fermi Gamma-ray Space Telescope Sees No Gamma Rays from Nearby Supernova ! Even when it doesn’t detect gamma rays, NASA’s Fermi Gamma-ray Space Telescope helps astronomers learn more about the universe. A nearby supernova in 2023 offered astrophysicists an excellent opportunity to test ideas about how these types of explosions boost particles, called cosmic rays, to near light-speed. But surprisingly, NASA’s Fermi Gamma-ray Space Telescope detected none of the high-energy gamma-ray light