When a supernova explosion results from core collapse in a massive star it appears to leave behind
A) a rapidly expanding shell of gas and a central neutron star or black hole.
B) a rapidly rotating shell of gas,dust,and radiation,but no central object.
C) a rapidly expanding shell of gas and a compact white-dwarf star at its center.
D) nothing,the explosion changes all the matter completely into energy,which then radiates into space at the speed of light.

Question

Quizplus · Accepted Answer

When a supernova explosion results from core collapse in a massive star, it leaves behind a rapidly expanding shell of gas and a central neutron star or black hole. The explosion blows off the outer layers of the star, leaving the core exposed. The core collapses under its own gravity and forms either a neutron star or a black hole, while the outer layers of the star are expelled into space as a rapidly expanding shell of gas.

When a Supernova Explosion Results from Core Collapse in a Massive