The Rise and Fall of the Earth

There's a lot of energy stored in the sun, but that energy is not going to be stored there forever. It will emit blackbody radiation to sort of heat up the stuff around it. So everything out there in the universe is shedding its energy as time goes on. The earth actually is glowing just not in the visible light. If you looked at the earth with an infrared camera, you would see it glowing just in a spectrum that's too long wavelength for our eyeballs to see.