All good things must come to an end, and, unfortunately for us, that includes the sun. But just how much time do we have until the light goes out?
The sun is about 4.6 billion years old and it will burn for another five billion years. That means we are about halfway through its adult phase.
But sadly, our time on earth will come to an end way before those five billion years run out. Every one billion years, the sun gets 10 percent brighter — and hotter.