GENERAL KNOWLEDGE

GK

THE UNIVERSE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
For stars that are bigger than our sun what happens when it no longer a main sequence star?
A
It becomes a protostar.
B
It becomes a super giant.
C
It becomes a white dwarf.
D
It becomes a red giant.
Explanation: 

Detailed explanation-1: -Main sequence stars over eight solar masses are destined to die in a titanic explosion called a supernova. A supernova is not merely a bigger nova. In a nova, only the star’s surface explodes.

Detailed explanation-2: -Eventually, as stars age, they evolve away from the main sequence to become red giants or supergiants. The core of a red giant is contracting, but the outer layers are expanding as a result of hydrogen fusion in a shell outside the core. The star gets larger, redder, and more luminous as it expands and cools.

Detailed explanation-3: -But to support their tremendous mass, supergiants burn up their fuel much more quickly. Eventually, all possible fuels are exhausted, the core collapses, and the star goes supernova.

There is 1 question to complete.