Explain Like I'm 5

Yay! Gravity is like a big hug from the Earth!

You know how when you give your favorite stuffed animal a big hug, it doesn't float away? That's because the Earth is pulling on it with an invisible string. This string is called gravity.

Gravity pulls everything towards the Earth, even you! That's why you don't float off into space when you're standing on the ground. It's like the Earth is giving you a big hug and keeping you safe on its surface. Isn't that cool?