Astronomers have strengthened long-standing predictions that massive runaway stars could have originated in binary pairs, and ...

In our galaxy, a supernova explodes about once or twice each century. But historical astronomical records show that the last ...

Editor's note: This article (originally published Aug. 13, 2025) has been updated to include new text and illustrations featured in the Jan. 2026 issue of Astronomy. Using an artificial intelligence ...

When a supernova was seen glittering in the night sky for six months in 1181, it was so bright that Chinese and Japanese astronomers recorded it as a “guest star” in the Cassiopeia constellation. Now, ...