Because the Moon is over a quarter the diameter of Earth, the Earth-Moon system is often cited as the pairing in our Solar ...

Ahead of Valentine's Day, prepare to be dazzled by the lunar heart, created by the interplay of light and shadow on our Moon.

As it continues to brighten, it takes on an oblong, or "gibbous," shape until it ... as the best for basic astronomy in our best beginner's telescope guide. The next moon phase milestone will ...

The moon's ascending node (the point in the sky where its orbit crosses the ecliptic from south to north) is moving westward ...

A new study implies that in the past, moons in our solar system may have had rings just like planets do — deepening the mystery of why no ringed moons exist today.

Welcome to this month’s edition of “What’s up in the sky?” February has a nice lineup of planets and some eye-catching ...

Five of the brightest planets will be visible to the naked eye. With help, you may even spot Uranus and Neptune.

Two gargantuan canyons on the moon were carved by a hailstorm of rocks — and that’s good news for future lunar astronauts.