Explain Like I'm 5

Gravity is like a big hug from the Earth. The Earth wants to keep you close, so it gives you a gentle pull. That's why you don't float off into space when you're standing on the ground. Imagine you have a ball, and you throw it up in the air. What happens? It comes back down, right? That's because the Earth is giving it a big hug, pulling it back down to the ground. Gravity is like a magic string that keeps everything connected to the Earth.