Add Yahoo as a preferred source to see more of our stories on Google. an illustration of the planet saturn as seen from one of its many moons two other smaller moons are in the distance The moons were ...

What is the difference between a moon and a planet? Trick question! According to scientific definitions, there often isn’t much of a difference at all. That might seem counterintuitive, but it’s true.

At a young age, we're told how the sun warms Earth and makes life possible. That idea sticks with most of us for life. But when we want to understand things more thoroughly and we dig more deeply, we ...

The moon has played a huge role in the development of Earth. It stabilizes the planet, tempers dramatic climate swings, and ...

The moon is our constant companion and the only natural object that always orbits Earth. It's about four times smaller than Earth and its gravity is much weaker, which is why astronauts bounce around ...

The photos, taken decades apart in 1968 and 2026, show Earth as it would be seen if you were standing on the moon. Take a look.

Earthlings have never been terribly sophisticated cosmic tourists. Ask us which worlds we’d like most to visit and our answers are always the same: Mars! Jupiter! Saturn! Neptune! But there’s a ...

August got a supermoon. So did September, with a partial lunar eclipse. Can't get enough of the supermoons? Well, October's full moon will be close to Earth again, shining bright as a supermoon. You ...