The universe has quasi-moons, mini-moons, and moonlets, but no official definition of what counts as a moon.

When the moon is nearly between Earth and the sun, one side of the moon faces the sun, and that side is illuminated, but the side the Earth sees is dark. This is called the new moon phase of the lunar ...

Earth's moon is occasionally illuminated by flickers, glows or beams of light. What are these mysterious lights?

The Moon, our constant celestial companion, is drifting away from Earth at a slow but measurable rate. According to a detailed study published byThe Conversation, the Moon is moving approximately 1.5 ...

The moon is still looking big and bright in the sky after last night's full moon, so what can we see? Keep reading to find out what's going on with the lunar phase now. The lunar phase is a series of ...

An unusual lunar event that happens only once every 33 months is occurring tonight — but you won’t be able to see it. A black moon will rise on Aug. 23 as the moon passes through its new moon phase at ...

In a rare skywatching treat, you can see August's full Sturgeon Moon rise soon after sunset on both Saturday, Aug. 9 and Sunday, Aug. 10. A full moon will rise this weekend — but, unlike most, there ...

Tonight's October full hunter's moon will also be the first, biggest and brightest supermoon of the year — a harvest moon that will shine for days. Here's when and what time to watch. The October full ...