Supernova - Wikipedia
Supernovae can expel several solar masses of material at speeds up to several percent of the speed of light. This drives an expanding shock wave into the surrounding interstellar medium, …
Supernova | Definition, Types, & Facts | Britannica
Dec 7, 2025 · Supernova, any of a class of violently exploding stars whose luminosity after eruption suddenly increases many millions of times its normal level. When a star ‘goes …
NASA’s Webb Identifies Earliest Supernova to Date, Shows Host …
5 days ago · NASA’s James Webb Space Telescope has observed a supernova that exploded when the universe was only 730 million years old — the earliest detection of its kind to date. …
What Is a Supernova: Types, Facts, and Famous Explosions
Oct 3, 2025 · What is a supernova explained simply? Learn how stars explode, the types of supernovae, what they leave behind, and the most famous supernovae in history.
What Is a Supernova? Definition, Types, and Famous Examples
What is a supernova? Learn how massive stars explode, the types of supernovae, and the famous cosmic events captured by astronomers.
Supernovas & Remnants - Harvard–Smithsonian Center for …
Supernovas are some of the brightest events in the universe, occasionally outshining entire galaxies at their peak. Many supernovas can be seen from billions of light-years away, and …
ESA - Webb identifies earliest supernova to date
4 days ago · The NASA/ESA/CSA James Webb Space Telescope has confirmed the source of a super-bright flash of light known as a gamma-ray burst, generated by an exploding massive …
JWST captures the earliest supernova yet - Astronomy Magazine
1 day ago · The James Webb Space Telescope (JWST) identified the earliest known supernova, occurring 730 million years after the Big Bang, by following up on the gamma-ray burst GRB …
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 …
Supernova - ESA/Hubble
Supernova explosions are spectacular exceptions to that rule. Several different pathways can lead to a supernova explosion, one of which is the death of a supermassive star.