The object dubbed Earth's "second moon" is actually a quasi-satellite that's accompanied the planet since 1957 — not a true ...

Earth’s atmosphere is slowly leaking into space, and new research shows some of it reaches the Moon, where it may be ...

The Moon is gradually drifting away from Earth at a rate you could measure with a ruler if you waited […] ...

Earth spun just a bit faster than usual on July 9 and is expected to do so again on July 22 and Aug. 5, according to the website TimeAndDate. Over a millisecond was reportedly shaved off the clock on ...

During its initial molten phase, the Moon experienced tidal bulges on its near and far sides due to Earth's immense gravitational pull. The Moon's rotation initially carried these gravitationally ...