Explain Like I'm 5

Gravity is like a big hug from the Earth! The Earth wants to keep everything close to it, so it pulls on everything that's near it. 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 pulling on the ball with its gravity. It's like the Earth is saying, "Hey, ball! Come back here and give me a hug!" And the ball says, "Okay, Earth! I'll come back and give you a hug!"