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) Its nuclear reactions would slow down because its heavy element abundance would be relatively less.
C) It would explode as a supernova.
D) It would increase in size and float away.
E) It would begin to evolve much more quickly than it is now.

Question

Quizplus · Accepted Answer

Adding more hydrogen and helium would increase the Sun's mass, leading to higher pressure and temperature in its core, accelerating nuclear fusion and causing it to evolve more quickly.

If Someone Somehow Added a Lot More Hydrogen and Helium