A seasonal Blue Moon is the traditional definition of a Blue Moon and refers to the third full moon in a season that has four full moons according to NASA. The second definition — which arose ...

Only when the moon, Earth and the sun are perfectly aligned is the moon 100% full. And sometimes — once in a blue moon — the moon is full twice in a month (or four times in a season ...

The super blue moon sets behind the Balmoral Clock in Edinburgh. (Photo by Jane Barlow/PA Images via ... [+] Getty Images) At 222,023 miles (357,311 km) from Earth it was the closest full moon ...

The most common definition of a blue moon is the second moon in a month with two full moons. Unfortunately, it doesn't mean the moon looks like a cosmic blueberry. The term "once in a blue moon ...

Want to capture tonight's “blue supermoon” with your smartphone? Taking a clear photo of the full moon using just a phone is tough due to the small size of the moon in the sky and your phone's ...