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, sweeping up an …

2026年1月20日 · 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 remnant, of a …

4 天之前 · 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 derived from nova …

4 天之前 · Major League Volleyball (formerly Pro Volleyball Federation) is the leading professional volleyball league in the United States. MLV sets the standard for the sport, offering the largest …

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

2025年10月3日 · 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.

2020年11月12日 · 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.

2025年3月30日 · 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 …

4 天之前 · Will two rare supernovas finally tell us how fast the universe is expanding? Perhaps, but we'll have to wait for it for them to 'reappear'.

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 nearby supernovas …