Exposure Galaxy supernova Astronomy Nebula Stars S
Details
- Code: 2145231
- Loopable: No
- Duration: 00:29
- Aspect: 16:9
- Alpha / Matte: No
- Model Release: No
- Property Release: No
- License: Royalty-Free
A supernova (abbreviated SN, plural SNe after "supernovae") is a stellar explosion that is more energetic than a nova. It is pronounced suːpəˈnoʊvə with the plural supernovae ˌsuːpəˈnoʊviː or supernovas. Supernovae are extremely luminous and cause a burst of radiation that often briefly outshines an entire galaxy, before fading from view over several weeks or months. During this short interval a supernova can radiate as much energy as the Sun is expected to emit over its entire life span. The explosion expels much or all of a star's materia at a velocity of up to 30,000 km/s (10% of the speed of light), driving a shock wave into the surrounding interstellar medium. This shock wave sweeps up an expanding shell of gas and dust called a supernova remnant