Astronomers may have discovered the first example of an explosive cosmic event called a "superkilonova," in the form of a gravitational wave signal detected on Aug. 18, 2025.

A star system in our own galactic neighborhood is poised to put on a show so bright it could briefly rival the planets and ...

Crab Nebula reveals gas from ancient supernova explosion Betelgeuse shows late-stage evolution of a massive star Stellar death spreads elements, triggering new star formation ...

Betelgeuse is a massive red star you can see with your own eyes, and one day it will explode as a supernova. It’s huge, ...

Astronomers have confirmed the existence of a companion star in a tight orbit around Betelgeuse, resolving a long-standing mystery about the star’s varying brightness. Reading time 2 minutes In 2024, ...

Astronomers have observed what they believe to be a never-before-seen companion star orbiting Betelgeuse, a pulsating red supergiant star in the shoulder of the Orion constellation. One of the best ...