A Star is a self-gravitating sphere of hot plasma that produces energy through nuclear fusion.

Stars are the element factories of the universe and the energy source for planetary systems.

The lifecycle matters: some stars end quietly, while the biggest can end in [[Supernova]] and leave [[Neutron Star|neutron stars]] or [[Black Hole|black holes]].

## See also
- [[Sun]]
- [[Supernova]]
- [[Galaxy]]