The James Webb Space Telescope has identified the earliest known supernova, a star that exploded when the universe was roughly 730 million years old. The discovery traces back to March 14, 2025, when ...

Add Yahoo as a preferred source to see more of our stories on Google. A set of supernovae are behaving in weird ways, more than a decade's worth of data from NASA's Chandra X-ray Observatory reveals.

A new study has surprised astronomers after unusual changes were spotted in the remains of exploded stars in a nearby galaxy. Instead of fading steadily over time as expected, many of these stellar ...

A star could be about to become visible in the night sky in a once-every-80-years explosion. Here’s how to easily find T Coronae Borealis (T CrB) in the night sky.

The James Webb Space Telescope is weighing in on a longstanding debate over why we don’t see more of the most massive red supergiant stars go supernova. NASA/ESA/CSA/Northrop Grumman In recent years, ...