What would happen if the sun ceased to exist?

Question

If the sun just ceased to exist tomorrow, would we all freeze to death and would the earth go through an ice age, or would we just have to turn up the heat and use our headlights all the time?

Answer 1

Well, the sun's gravity holds us in orbit, so if it was gone, we'd go flying off into space. Also, there'd be no light, so no plants - no food chain. It'd be freezing cold. We'd all be dead.

Answer 2

Yes, would all freeze to death.  Earth would be nothing but a big ice ball and life would end as we know it.