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 ...

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 has long been the Earth's close companion, but researchers have struggled to understand exactly when the moon formed, because tiny crystals in the moon rocks brought home by astronauts ...

A photograph of the moon by the Apollo 17 crew on their return trip back to Earth. The new study analyzes material gathered from the lunar surface during the 1972 mission. NASA / Johnson Space Center ...

The findings suggest that similar moonlets could orbit distant exoplanets and their moons. researchers said. When you purchase through links on our site, we may earn an affiliate commission. Here’s ...