Supernovae are one of the most extreme events in the known universe. They are caused by
A)the implosion of a white dwarf, which has run out of all its fuel.
B)a supermassive supergiant star undergoing a massive nuclear chain reaction.
C)the collapse of a supermassive supergiant star.
D)any of the above

Question

Quizplus · Accepted Answer

Supernovae are typically caused by the collapse of a massive star (supergiant) at the end of its life cycle, leading to a catastrophic explosion.

Supernovae Are One of the Most Extreme Events in the Known