Okay kiddo, imagine you're looking up at the sky at night and there are a lot of stars. You might want to be able to know exactly where each star is and how bright it is. But how do you do that?
Well, scientists came up with a way to divide the sky up into little parts called square degrees. A square degree is like a little square on a map, but on the sky. It helps scientists to pinpoint exactly where stars are.
Think about it like playing a game of Where's Waldo. Instead of searching the whole picture for Waldo, you can focus on one little square at a time to find him. That's how scientists use square degrees to study the stars in the sky.
Now, these squares can also help us measure how much light a star is making. Just like a lightbulb, stars have different levels of brightness. By measuring how bright a star is in a square degree, scientists can understand more about how stars work and how they change over time.
So basically, a square degree is like a little box that helps scientists study the stars in the sky.