A supernova (pl.: supernovae) is a powerful and luminous explosion of a star. A supernova occurs during the last evolutionary stages of a massive star, or when a white dwarf is triggered into runaway …

2 days ago · Webb’s sensitive infrared observations helped in detecting and distinguishing the fading light of the explosion from its faint host galaxy.

4 days ago · When a star “goes supernova,” considerable amounts of its matter, equaling the material of several Suns, may be blasted into space with such a burst of energy as to enable the exploding star …

4 days ago · Explosions of all varieties are booming throughout the universe. When a massive star dies, for instance, it bursts in a bright supernova, sometimes leaving behind a dead core called a neutron …

Aug 22, 2025 · This powerful side-by-side comparison shows just how bright a star explosion is. The comparison of two images taken by the Hubble Telescope showing the power of a supernova.

Dec 20, 2025 · A puzzling cosmic blast detected in both light and gravitational waves may hint at a previously unseen type of explosion, challenging astronomers to rethink how neutron stars are born …

Aug 21, 2025 · Scientists have identified a never-before-seen supernova, SN2021yfj, which exploded after losing nearly all of its outer layers. Instead of light elements, it revealed silicon and sulfur from...

Sep 25, 2025 · Each blast is the extremely bright, super-powerful explosion of a star. An illustration of one of the brightest and most energetic supernova explosions ever recorded.

Dec 17, 2025 · Astronomers may have discovered a never-before-seen cosmic explosion that effectively combines a supernova with a kilonova—the blast that results when two dead, dense stars collide. …

Mar 30, 2025 · A supernova is not just a star’s death—it is a dramatic event that reshapes the cosmos. These cosmic explosions are responsible for creating the elements that make up the Earth and life …