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, …
NASA’s Webb Identifies Earliest Supernova to Date, Shows Host …
1 day 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. …
JWST Detects Record-Breaking Supernova That Erupted
13 hours ago · A faint, tiny flash of red light glimpsed at the Cosmic Dawn more than 13 billion years ago has smashed the record for the earliest supernova ever observed.
Supernova | Definition, Types, & Facts | Britannica
Nov 21, 2025 · supernova, any of a class of violently exploding stars whose luminosity after eruption suddenly increases many millions of times its normal level. The term supernova is …
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 …
What Is a Supernova? - Space
Jun 19, 2023 · A supernova is what happens when a star has reached the end of its life and explodes in a brilliant burst of light.
ESA - Webb identifies earliest supernova to date
1 day 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 …
Scientists mapped the shape of a supernova for the first time ever ...
Nov 28, 2025 · Astronomers using data from the Very Large Telescope (VLT) have revealed that the initial "breakout" phase of a supernova is elongated, not perfectly spherical.
Webb identifies earliest supernova to date, shows host galaxy
1 day 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 …
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.