A Supernova is the explosive death of a star, releasing an enormous amount of energy in a short time.
Supernovae matter because they:
- forge and disperse many heavy elements (like iron, gold, and uranium) into space,
- can briefly outshine an entire Galaxy,
- leave behind compact remnants such as neutron stars or black holes,
- and help trigger new generations of star formation.
There are multiple pathways to supernovae, but two common ones are:
- Core-collapse supernovae from very massive stars,
- Type Ia supernovae from white dwarfs in binary systems.
In short: supernovae are one of the main ways the universe recycles matter from old stars into future stars, planets, and life.