Supernova

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.

See also

• The Big Bang
• Cosmos
• Science