Supernova - Wikipedia
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 …
Supernova | Definition, Types, & Facts | Britannica
6 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 …
Why Do Stars Explode? Supernova Formation and the Final Stage …
2 days ago · Supernova formation ends a star lifecycle, dispersing heavy elements and shaping galaxies, from neutron stars to black holes across cosmic history.
Strange Cosmic Blast May Be First-Ever Superkilonova Observed
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 …
Astronomers stunned by the strangest supernova ever seen
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 …
Astronomers May Have Spotted a Never-Before-Seen
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 …
What is a Supernova? Exploring the Explosive Death of Stars and …
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 …
First-of-its-kind supernova reveals inner workings of a dying star
Aug 20, 2025 · For the first time, astrophysicists detected a supernova embedded in a wind rich with silicon, sulfur and argon. Observations suggest the massive star lost its outer hydrogen …
What is a supernova? | Space
Jun 19, 2023 · A supernova is the explosion of a massive star. There are many different types of supernovae, but they can be broadly separated into two main types: thermonuclear runaway …
What Is a Supernova? | NASA Space Place – NASA Science for Kids
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.