A blue moon is the second full moon that falls within a calendar month. A supermoon occurs when the moon is at its closest point in its orbit to earth.
A supermoon takes place when the moon is full and unusually close to Earth, appearing some 14 per cent larger and much brighter than normal. In August there hav
Rare blue supermoon dazzles stargazers around the globe phys.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from phys.org Daily Mail and Mail on Sunday newspapers.