According to our modern understanding,what is a nova?
A)an explosion on the surface of a white dwarf in a close binary system
B)the explosion of a massive star at the end of its life
C)the sudden formation of a new star in the sky
D)a rapidly spinning neutron star

Question

Quizplus · Accepted Answer

A nova is an explosion that occurs on the surface of a white dwarf star in a close binary system, when the white dwarf accretes material from its companion star and becomes unstable. The explosion causes a sudden increase in brightness of the white dwarf, visible to astronomers as a "new star" in the sky.

According to Our Modern Understanding,what Is a Nova