This Article is From Jul 12, 2014

Heads up! Supermoon to Appear Tonight; Three This Summer

Heads up! Supermoon to Appear Tonight; Three This Summer

One day before a "supermoon," the waxing gibbous moon is viewed from Whittier, Calif., Friday, July 11, 2014.

New York: Tonite the  full moon will appear to be unusually big. In fact, it will be a "supermoon."

That's the nickname for full moons that happen when our celestial neighbor is relatively close to Earth. That distance varies because the moon follows an elliptical orbit. When it's close and full, it appears bigger and brighter than normal, although in fact the difference can be hard to detect.

If you see Today's moon close to the horizon it may seem huge, but that's just an illusion caused by its position in the sky.

Two other full moons this summer, on Aug. 10 and Sept. 9, are also supermoons.

It's not all that unusual to have a supermoon. There were three in a row last year.

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