If someone somehow added a lot more hydrogen and helium to the Sun (say 50% more than it has now), what would happen to it?
A)It would cease to exist as a star because it would be too diffuse and fluffy.
B)It would increase in size and float away.
C)It would begin to evolve much more quickly than it is now.
D)It would explode as a supernova.
E)Its nuclear reactions would slow down because its heavy element abundance would be relatively less.

Question

Quizplus · Accepted Answer

Adding more hydrogen and helium to the Sun would increase its mass, causing it to evolve more quickly and enter later stages of its life cycle sooner. This could result in it expanding into a red giant more rapidly, potentially engulfing planets in its inner solar system. However, it would not explode as a supernova unless it had at least eight times its current mass.

If Someone Somehow Added a Lot More Hydrogen and Helium