the sun is burnning out?

another movie "sunshine", where they take science and make a bad mockery of it, i love scifi, but come on, lets find a subject that at least makes a little sense? the sun converts mass, on the order of 5 million tons of it per second, directly into energy. thats about 200,000,000 times the amount of energy released by every atomic bomb ever detonated on earth (all added together) every second..... so.... how you gonna compare to that trying to heat it back up? and thats just the first problem i see. i hate it when movies do that.