Explain Like I'm 5

So, you know how things have weight, right? Like your toy car or your favorite book? Gravity is what keeps them on the ground and not floating off into space!

Imagine you have a ball, and you throw it up in the air. What happens? It comes back down to your hand, right? That's because the Earth is pulling on the ball with an invisible string. It's like the Earth is giving the ball a big hug!

Gravity is like a big hug from the Earth, and it's what keeps everything stuck to the ground. Even you! So, you're not floating off into space right now, because the Earth is giving you a big hug with gravity!