The solar system's largest moon, Ganymede, which orbits the largest planet, Jupiter, was hit by an asteroid four billion years ago that shifted the gas giant's satellite on its axis, new research ...

Its eccentric orbit around our planet is thought ... But the Earth spins on its axis much faster than the Moon orbits above, meaning friction from the ocean basins moving beneath also acts to ...

The moon's orbit around Earth appears so regular that ... Tidal effects are also slowing the rate at which the moon rotates on its axis, resulting in the moon "tidally locking" with Earth ...