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, …

Oct 11, 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 …

Sep 25, 2025 · A supernova of a star more than about 10 times the size of our sun may leave behind the densest objects in the universe— black holes. The Crab Nebula is the leftover, or …

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.

What is a supernova? Learn how massive stars explode, the types of supernovae, and the famous cosmic events captured by astronomers.

Dec 23, 2024 · If a very nearby star goes supernova, it can genetically alter or possibly even destroy life on Earth. Even a fairly distant one often leaves visible wreckage that makes us …

Nov 12, 2020 · A supernova is a star's colossal explosion at the end of its life, which can outshine its entire galaxy. Read about causes and types of supernovae here.