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 with a big, strong hug. That's why you don't float off into space when you're standing on the ground. It's like when you give your favorite teddy bear a hug and don't want to let it go. The Earth is giving everything a big hug and keeping it on the ground. That's gravity!