Is there a full moon tonight? A rare 'once in a blue moon' moment is arriving this week—here’s when to look up, what it means ...

Despite its poetic nickname, the moon that’s turning full on May 31 will not sport a blue tint. Instead, it will look like an ...

Once in a blue moon” is usually just a saying people use for something that rarely happens. But on May 31, the phrase will ...

See spectacular photos of the Blue Moon, the rare second full moon of the month, captured by skywatchers worldwide.

A once in a blue moon lunar event is happening tonight. Here's how to glimpse the special full moon in Illinois.

Qatar residents will be able to see a rare Blue Moon on Sunday evening as the second full Moon of May lights up the skies ...