Prague, October 1604. The then 34-year-old astronomer Johannes Kepler was looking at the constellation of Ophiuchus, and he ...

Decades in the making, NASA's X-ray timelapse shows a stellar explosion expanding into space at up to 2% the speed of light.

James Webb has spotted the most distant supernova ever seen, exploding just 730 million years after the Big Bang, offering ...

Astronomers have confirmed the most distant supernova, SN in GRB 250314A, which exploded just 730 million years after the Big Bang, using the James Webb Space Telescope.

A strange double flash in a distant galaxy may be the first glimpse of a “superkilonova,” a cosmic one‑two punch that fuses ...

A research team led by Caltech may have just discovered the first-ever superkilonova, a cosmic phenomenon in which a star explodes twice in violently different ways. Their analysis of a series of ...

"We do not know with certainty that we found a superkilonova, but the event nevertheless is eye-opening." When you purchase through links on our site, we may earn an affiliate commission. Here’s how ...