Phenomenon
Supernova
The catastrophic death of a massive star.
An explosion that briefly outshines an entire galaxy and forges most elements heavier than iron. Two main types: thermonuclear (Type Ia) and core-collapse (Type II).
Why it matters
Every atom of calcium in your bones and iron in your blood was forged inside an ancient star and scattered by a supernova.
See also
Supernova Type II
Death of a massive star with hydrogen still intact.
Long Gamma-ray Burst
An extreme blast from a collapsing massive star.
Eta Carinae-type Eruption
A supernova impostor from a massive star.
Stellar Flare
A sudden magnetic eruption on a star.
Stellar Wind
A continuous outflow of particles from a star.
Bipolar Outflow
Twin jets blasted from a young star.