"UY Scuti: It's the largest star that we've ever discovered. And if it were to replace our Sun, it would change a lot more than just the amount of sunscreen you'd have to put on.

Read on to learn more about UY Scuti, the largest star we know of, and other such stars. If you don't know much about space, your first guess might be that the sun is the biggest star in the universe.

Celtic and Rangers meet in an explosive Scottish Cup Final, and you can watch the action from anywhere in the world.