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 big squeeze. That's why you don't float off into space when you're standing on the ground. The Earth's hug is what keeps you on the ground. It's like when you hug your favorite teddy bear, you want to keep it close, right? The Earth feels the same way about you. And that's why you don't float away.