A second full moon in a calendar month will occur on May 31 and be best seen at moonrise on May 30. Why is the Blue Moon one of astronomy’s most misunderstood terms?

Don't miss 2026's smallest full moon with this livestream from Italy with the Virtual Telescope Project. The 'Blue Moon' livestream will begin at 9:30 p.m. EDT (0130 GMT).

Do they really happen "once in a Blue Moon?” ...

This Monday, August 19th, 2024, a full Blue supermoon in the sign of Aquarius will peak at 2:26 p.m. ET. But what exactly is a Blue Moon, what does it mean, and when can we expect to see one again?

The Moon follows a cycle of eight phases, spanning a month − more precisely 29.5 days. Beyond its sheer size and glow, the full moon can hold deep spiritual significance, depending on the season or ...

A rare Blue Full Moon is set to grace the night sky, offering sky-gazers an unusual lunar spectacle that will not be seen again in quite the same way for decades. The celestial event is attracting ...

Add Yahoo as a preferred source to see more of our stories on Google. Read on to learn more about the meaning of a blue moon in Sagittarius and how it will affect Sagittarius, Gemini, Virgo, and ...

Add Yahoo as a preferred source to see more of our stories on Google. May 31, 2026 at 4:43 a.m. ET brings us a rare Blue Moon—the second full Moon occurring within a single calendar month—making this ...

You’ve probably heard the phrase “once in a blue moon” used to describe something that happens rarely — and that makes sense, given that a blue moon usually refers to the second full moon to hit in ...

Mark May 31, 2026, in your calendar because there will be a rare blue moon in Sagittarius. Blue moons occur when there’s a second full moon toward the end of the month. This is an ultra-powerful ...