When teachers explain ocean tides, they frequently describe how the moon's gravity pulls on Earth and all of its water. This, they often say, leads to a gravitational imbalance, which stretches ...

Her face is the moon, and her body is the ocean. The gravitational pull of her moony head moves around her watery body. Gravity is a force that attracts things to each other – the bigger the ...

The moon's gravity pulls the ocean toward itself to create the near-side bulge, but this doesn't account for the bulge on the far side. Here, follow a step-through animation that explains why ...