The sun is a mass of incandescent gas, a gigantic nuclear furnace, where hydrogen is built into helium at a temperature of millions of degrees. Yo ho, it's hot, the sun is not a place that we could live, but here on Earth, there'd be no life without the light it gives. We need its light, we need its heat, we need it's energy... Without the sun, without a doubt, there'd be no you and me.