WHEN WILL EARTH DIE?

As you have already seen, the very existence of the Earth, and all the other planets in the solar system, depends upon the sun. You have seen how the sun provides enormous amounts of energy by the change of the gas hydrogen into the gas helium.But as with other 'engine' the fuel, that is the hydrogen, must slowly be used up. When this happens, as has already occurred with millions of other stars, the Sun will collapse and explode. The explosion will totally destroy the Earth and its neighbours. There is no need to worry unnecessarily,  will be at least another 5000 million years before the Sun explodes.