A supernova from the early universe looks unexpectedly familiar, challenging ideas about how the first massive stars lived ...

Astronomers have caught a cosmic explosion doing something it was never supposed to do, firing off three powerful gamma-ray ...

Thanks to improved data analysis techniques and a new operating mode, the Gamma-ray Burst Monitor (GBM) aboard NASA’s Fermi Gamma-ray Space Telescope is now 10 times better at catching the brief ...

When a distant galaxy briefly outshines everything around it in high-energy light, astronomers usually know which playbook to reach for. Gamma-ray bursts tend to fall into familiar categories, either ...

magine you had superhero vision and could see a whole new world of fascinating phenomena invisible to the human eye. NASA's Fermi Gamma-ray Space Telescope gives astrophysicists analogous powers. It ...

Above the cloud tops, thunderstorms throb with a complex, frenetic light show of high-energy radiation. A view from a retrofitted spy plane soaring at 20 kilometers up revealed storms glowing and ...