Because the Earth is doing the work of increasing the Moon's momentum, the Earth's rotation slows down in turn, as its momentum goes to the Moon. To put it another way, as the Moon's orbital momentum ...

Our Moon plays a major role in the rotation speed of Earth, and it’s actually making our days ever-so-slightly longer. But Mars’ two moons are much smaller and don’t seem to be the culprits.

A team of scientists from Chengdu University, led by academic Wang Chengshan, has published a study in the renowned journal Proceedings of the National Academy of Sciences (PNAS), the result of an ...

In a new study, scientists have gathered all available NASA/ESA Hubble Space Telescope data on the four outer moons of Pluto to analyse the system in more depth than ever before. The observations show ...