On July 9, 2025, scientists at the International Earth Rotation and Reference Systems Service (IERS) reported that the Earth ...

So a less massive moon would nonetheless end up closer than the real one to Earth. The energy given to the moon comes from Earth's rotation—and to compensate, our planet is slowing down.

The moon is slowly creeping away from Earth, but will we actually lose the moon before the sun turns into a red giant and destroys us both?

Billions of years ago the average Earth day lasted less than 13 hours and it is continuing to lengthen. The reason lies in our relationship to the Moon.

The Moon takes about 27.3 days to perform one complete orbit around the Earth. And that's the same time that it takes for the Moon to perform one rotation on its spin axis.

Earth rotates the way it does because of how it formed early in the history of the solar system, but all things in space rotate.

This Earth and Moon orrery was built by PaulbotBuilds and posted on LEGO Ideas on March 13, 2023. For now, it achieved over 800 supporters.

In the mid-1990s scientists found evidence that Earth’s inner core, a superheated ball of iron slightly smaller than the moon, was spinning at its own pace, just a bit faster than the rest of ...