noun
- the explosive death of a massive star that briefly outshines an entire galaxy
Usage: astronomy
Examples
- The supernova was visible to the naked eye for several weeks.
- Astronomers detected a supernova in a distant galaxy.
- Heavy elements are created during a supernova explosion.
- The supernova left behind a neutron star.
- Scientists study supernovas to understand stellar evolution.
- The brightness of the supernova peaked after three days.