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 us with its strong arms. That's why we don't float off into space when we're standing on the ground. It's also why things fall down when you drop them. The Earth is giving them a big hug, and they can't resist. Imagine you're playing with a ball, and you let go of it. The Earth's hug pulls it down, and it falls to the ground. That's gravity!