Astronomers using the U.S. National Science Foundation National Radio Astronomy Observatory (NSF NRAO) instruments, the U.S.

A double explosion, in which a dying star split, then recombined, may be a long-hypothesized but never-before-seen "superkilonova." When you purchase through links on our site, we may earn an ...

A gamma-ray burst (GRB) — the most energetic type of explosion in the universe since the Big Bang — is detected once every day, on average. But what happened on July 2, 2025, was highly unusual: ...

Astronomers have re-examined the biggest explosion ever seen, possibly the most massive explosion since the Big Bang, to learn more about mysterious blasts of high-energy called gamma-ray bursts (GRBs ...

This video zooms in on the gamma-ray burst GRB 250702B. It combines images taken with different telescopes at different times and various wavelengths. The journey begins with a wide-field view of the ...

Scientists may have to rethink their playbook for studying gamma-ray bursts, the most powerful known cosmic explosions, after a blast detected in July set a new record by firing energetic jets for ...

An investigation of a cosmic explosion that marked the violent death of a massive star has called into question our understanding of the connection between ejected debris violently striking ...

Astronomers observed a unique gamma-ray burst outside the Milky Way, repeating over a day, unlike any known star-destruction event. (Nanowerk News) Astronomers have detected an explosion of gamma rays ...

Astronomers may have discovered a never-before-seen cosmic explosion that effectively combines a supernova with a kilonova—the blast that results when two dead, dense stars collide. When massive stars ...

Artist's rendition of GRB 250702B's ultra-relativistic jet (moving at nearly the speed of light) escaping from its dusty, massive host galaxy. Astronomers at the University of North Carolina at Chapel ...

The blast may have been a kilonova — a type of neutron star merger — in the wake of a more traditional supernova.