The majority of massive stars,at the point in time when they explode as supernovae,have become
A) red supergiants.
B) neutron stars.
C) blue supergiants.
D) white dwarfs.

Question

Quizplus · Accepted Answer

The majority of massive stars, at the point in time when they explode as supernovae, have evolved to become red supergiants. This is because these stars have exhausted their nuclear fuel in their cores, causing the core to contract and heat up, which leads to the outer layers of the star expanding and cooling, resulting in a red supergiant phase. Eventually, the star will undergo a rapid collapse and rebound, leading to a supernova explosion.

The Majority of Massive Stars,at the Point in Time When