Blue moon
A blue moon is the name given to the second full moon in a
single month.
The month’s first full moon occurred Aug. 1.
But to the average night sky stargazer, the moon can still appear
full in the day before and after the actual full moon time.
On Friday (Aug. 31, 2012) night, a rare blue moon rose in the sky.
The astronomical event occurs only once every three years or so.
Because the lunar cycle is 29.5 days, most months only see one full moon.
Next time we will see a blue moon is on July 31, 2015.
The blue moons aren’t really blue. The term is a misnomer and
actually refers to the second of
two full moons that occur during the same calendar month.
8월 31일 우리집 뒷 마당에서
좀 확대해서 찍어 보았다.
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