Heads up! Supermoon is here - CBS News 8 - San Diego, CA News Station - KFMB Channel 8

Heads up! Supermoon is here

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A perigee moon, also known as a supermoon, looks through a crescent of the dome of the grand Faisal mosque in Islamabad, Pakistan, Saturday, July 12, 2014. A perigee moon, also known as a supermoon, looks through a crescent of the dome of the grand Faisal mosque in Islamabad, Pakistan, Saturday, July 12, 2014.

Look! Up in the sky! It's supermoon!

Because our celestial neighbor is relatively close to Earth, these full moons will appear to be unusually large. That distance varies because the moon follows an elliptical orbit. When it's close and full, it appears bigger and brighter than normal, although the difference can be hard to detect.

The full moon Saturday may seem huge, but it's just an illusion caused by its position in the sky.

Two other supermoons will come later this summer on Aug. 10 and Sept. 9.

Check out these supermoons from around the world:

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Online:

NASA on supermoons: http://1.usa.gov/1jxZkPt

Follow AP photographers on Twitter: http://apne.ws/XZy6ny

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