Astronomers Caught a Star Exploding Almost the Instant It Began

Astronomers witnessed a star’s death almost from the instant it began, catching an extraordinarily rare X-ray flash as a supernova erupted 500 million light-years away. Astronomers rarely get to watch a star die from the beginning. Usually, a supernova is discovered only after the explosion is already well underway. SN 2026gzf was different. On March [...]