How Do Tides Work in Space?

Tides happen because big things in space pull on water, just like a magnet pulls on metal, but with oceans and moons instead.

Imagine you're holding a balloon filled with water. If your friend comes up behind you and gently pulls the balloon toward them, the water moves, that’s tidal motion! Now imagine your friend is the Moon, and the balloon is Earth's oceans. The Moon pulls on the oceans, making them bulge out, and that’s a high tide.

When the Moon isn’t pulling as hard, like when it’s on the other side of Earth, that spot gets a low tide, because the water has moved away from it.

Sometimes the Sun also helps pull on the oceans too. When the Sun and Moon team up to pull in the same direction, we get really big tides, these are called spring tides. But when they pull in opposite directions, the tides are smaller, those are neap tides.

So tides aren’t magic, they’re just Earth’s oceans dancing to the Moon’s and Sun’s rhythm!