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 ...

Earth has a number of mini-moons and quasi-moons. Mini-moons are objects that orbit our planet. But they make for fickle fans: They tend to swing around Earth for only a matter of months. One example ...

The headlines are popping up across the web alerting stargazers to the upcoming Black Moon that will rise with sun early on Sunday, Aug. 23. You won't be able to see it, but there's a reason you might ...

September’s full moon will be accompanied by a total lunar eclipse that will be visible to much of the world. Here’s how to see this weekend’s celestial display.