The second full moon of May — a blue moon — will make an appearance this weekend.

Your "once in a blue moon" moment is coming up quick. May will end with the rare lunar event, the only one of 2027. How to watch it in Arizona.

May 2026 features a Blue Moon towards the end of the month. It will be a micromoon, which occurs when a full moon reaches apogee, its greatest distance from Earth. The May 1 Flower Moon was the first ...

We all know the phrase – if something never happens, or very rarely, it happens once in a blue Moon. But what is a blue Moon, what does the term mean and how often do they occur? And what's the ...

Add Yahoo as a preferred source to see more of our stories on Google. This only happens once in a blue moon, literally. May's second full moon is almost here, and not only is it a rare blue moon, but ...

See the best images of the Blue Moon from around the world as a second dramatic moonrise occurred in the same month in a rare sky event.

Add Yahoo as a preferred source to see more of our stories on Google. A rare celestial event is set to light up the night sky this weekend, as what is known as a blue moon rises on May 31. But despite ...

2026 will bring several lunar events that backyard astronomers will want to stay awake for. The first full moon of the year will take place on Saturday, Jan. 3, and is known as the Wolf Moon, ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. May ends with a rare calendar event — a second full moon in ...

May's rare blue moon is still ahead, giving skywatchers one more chance to catch a full moon before June arrives. The second full moon of the month — known as a blue moon — will rise May 31, marking ...