Blue Moon 2026: May 'Blue' Full Moon Rises Over the Poseidon Temple in Greece (opens in new tab)

A rare Blue Moon illuminated the skies above the ancient Temple of Poseidon at Cape Sounion, Greece, creating a breathtaking scene for skywatchers and photographers alike\. Despite its name, the Moon did not appear blue\. The term \"Blue Moon\" refers to the second full moon occurring within the same calendar month, a relatively rare event\. This year's Blue Moon was also a \"micromoon,\" meaning it appeared slightly smaller than usual because it was near the farthest point in its orbit from ...