This year, May is bookended by two full moons. So, on Sunday, the month’s closing spectacle will be a once-in-a-blue-moon event—literally. The second full moon, known as a blue moon, will grace Earth’s sky on May 31,

Photo by Omer Tarsuslu/Anadolu via The Moon is big and bright in the sky tonight, so what can you see? With the help of NASA's Daily Moon Guide, keep reading to find out. As of Thursday, May 28, the Moon phase is Waxing Gibbous.

Blue moons only happen once in a while, but there's a difference between a calendrical blue moon and a zodiacal one, according to an astrologer.

May's blue moon will also be a micromoon. Here's what to know.

A rare Blue Moon will appear on May 31 as the second full moon of the month, the only Blue Moon this year, highlighting how lunar cycles misalign with the calendar

Few sights are as universally captivating as a full moon rising into the night sky. For many of us, stepping onto a balcony or looking up from a quiet street to admire it feels almost instinctive. Call it romance or simple curiosity, but that glowing disk ...

The phenomenon of a Full Moon arises when our planet, Earth, is precisely sandwiched between the Sun and the Moon. This alignment ensures the entire side of the Moon that faces us gleams under sunlight.