Orbit@home is like a big and complicated puzzle game that lots of people work on together. You know how when you play a puzzle game, there are a lot of small pieces that you arrange to form a bigger picture? In this game, scientists have a big puzzle in space they need help with. So, they created a way for people all over the world to help out by sorting through the small pieces of data to help recreate the bigger picture. This puzzle is called an orbital simulator, and it helps scientists understand things like how the Earth moves around the sun or how different planets move in space. By playing this game, people can help scientists discover new things about our universe that they couldn't do all by themselves.