Because the Earth is doing the work of increasing the Moon's momentum, the Earth's rotation slows down in turn, as its ...

Tides come from a difference in gravity across an object. The force of gravity exerted by the Moon is about 4% stronger on the side of Earth that faces toward the Moon, compared to the opposite side ...

The moon orbits Earth — right? The answer is actually a little more complicated than that. The moon is circling a point about 3,000 miles from our planet's center, just below its surface. Earth is ...

Photographer Andrew McCarthy recorded a year's worth of full moons to show the lunar libration. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.