But the sun already is an extreeeemly large explosion! That's the point! One doesn't stop an explosion, one waits for it to exhaust its materials. The sun's going to take a while to do that.
I mean extreeeeeeeeemly large Like solar system large.....
It's one of those unlikely "what if" things people (some with too much time on their hands) like to ponder. Like my question: What if you cored the earth from pole to pole, then jumped in the hole - what would happen?
True fact: A human being generates 5000 times more heat per unit mass than the sun.
100 watts/ 100 kg = 1 watt/kg
4e26 watts / 2e30 kg = 0.0002 watts/kg