Blue Moon

This image taken just hours before the full phase in clear skies over Nottingham, UK, it features eye-catching bright rays extending from the prominent young crater Tycho in the Moon‘s southern hemisphere.  Image credit: Simon Smith

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The blue lunar terrain on the right includes the dark flat expanse of the Sea of Tranquility and the Apollo 11 landing site.

Blue moon is the appearance of the third full moon in a season with four full moons. It is never really blue. The term has also been used to refer to the second full moon in a month.

Most years have twelve full moons that occur approximately monthly. In addition to those twelve full lunar cycles, each solar calendar year contains roughly eleven days more than the lunar year of 12 lunations.



In the video you can see: Two full Moons in August – Slooh will cover the Blue Moon Live from Canary Islands with a special solar feed from Arizona.

We will also honor Neil Armstrong.

via apodskyandtelescope