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?

Blue Moon 2026 date: A rare Blue Moon will appear on May 31, 2026, marking the second full Moon of the same calendar month. The event occurs because the Moons 29.5-day lunar cycle…

North America’s celestial highlights for the week ahead, which also apply to mid-northern latitudes in the northern hemisphere.