Corot is a special kind of telescope that is used to find planets outside of our solar system. It's like a big eye that can see faraway stars and look for something that passes in front of them.
Just imagine you are playing hide and seek with your friends, but instead of hiding behind a tree, you are hiding behind your mom. If your friends were standing far away, they might not be able to see you because your mom is blocking you. But if they had a special tool - like Corot - they could see a shadow of you passing in front of your mom and know that you're there.
Corot does the same thing by looking at stars and measuring how their brightness changes over time. If something passes in front of the star, it blocks some of the light and makes the star look a little dimmer. This is how Corot can find planets - it looks for these little dips in brightness and knows that something is passing in front of the star.
So, like a big eye, Corot helps scientists find planets outside of our solar system by watching the stars and looking for telltale changes in brightness caused by planets passing between the star and Earth.