Good Friday! Have you heard the great news? There will be a rare Blue Moon tonight. When there are two full moon's in the same month, the second one is called a "blue." Pictured here, a full moon visible above Earth’s horizon and airglow, photographed by an Expedition 12 crewmember on the International Space Station (ISS). Credit: NASA #bluemoon #fullmoon #moon #space #gradient #iss #photography #weareplanetary #exploration #spacestation #goodfriday #spaceisrad