Astronomers have captured the death of a massive star from its first faint flash of X-rays, revealing an unusual supernova.

A rare X-ray flash captured the first light from SN 2026gzf, an energetic supernova that produced no detected gamma-ray burst. The dying star had shed its hydrogen and helium, building shells of ...

NASA has released an unprecedented time-lapse video showing the evolution of Kepler’s Supernova Remnant, a cosmic relic of a massive stellar explosion. Captured by the Chandra X-ray Observatory over ...

These images show the evolution of supernova SN 2026gzf, which was first detected by the Einstein Probe on 21 March 2026.

A new video shows the evolution of Kepler's Supernova Remnant using data from NASA's Chandra X-ray Observatory captured over more than two and a half decades. Kepler's Supernova Remnant, named after ...

The James Webb Space Telescope has identified an original star that caused a supernova for the first time. Credit: NASA / ESA / CSA / STScI / Charles Kilpatrick / Aswin Suresh Astronomers say they've ...

A spectacular cosmic event nicknamed “SN Winny” could help solve one of astronomy’s biggest mysteries: how fast the universe is expanding. This rare superluminous supernova, located 10 billion ...

Cosmic rays seen at Earth show a wide range of particle energies, from 10 7 electron-volts (eV) to more than 10 20 eV, the latter being about the same as the kinetic energy of a 450 gram football ...

Astronomers have discovered a strange new signal coming from an exploding star — a “chirp” that speeds up over time, similar to the signals seen when black holes collide. The unusual pattern appeared ...