Why Would We Need a Colider on the Moon?

We can build kiliders here on earth that are safe, but they're getting sort of awkwardly big. People don't like having kiliders right underneath their house. To find enough space to put some in its, like a hundred kilometers in circumference, is a little awkward. There are plans for like hundred kilometer circumference. Kiliders, maybe in china. People are talking about maybe putting one in europe. But these things get a little awkward whit you have to invent all this new technology to have this thing floating. It's a little crazy. So would the physics even work to put a colider somewhere where gravity is frent and we don't have an atmosphere? You know