Scientists have detected the most distant supernova ever seen, exploding when the universe was less than a billion years old.

A strange double flash in a distant galaxy has given astronomers their strongest hint yet that a long‑theorized kind of stellar cataclysm, a superkilonova, might actually exist. The event appears to ...

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 ...

WASHINGTON, Nov 12 (Reuters) - The explosive death of a star - a supernova - is among the most violent cosmic events, but precisely how this cataclysm looks as it unfolds has remained mysterious.

A strange cosmic blast that lit up the sky in two distinct acts is forcing astronomers to rethink how stars live and die. The event, tagged AT2025ulz, appears to be the first known case where a ...