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

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 ...

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 is drifting away from Earth at about 1.5 inches yearly. This movement is due to the Moon's gravitational pull on Earth's oceans. Eventually, Earth will always show the Moon the same side. The ...

The moon has been Earth's close companion for billions of years, and while our view of its shape and size varies somewhat as it orbits our planet, it remains a constant presence in the sky. But could ...

NASA's Juno probe has flown closer to Jupiter and its largest moon, Ganymede, than any other spacecraft in more than two decades — and the images it beamed back of the gas giant and its icy orb are ...