Jul 13, 5:24 AM EDT

Heads up! Supermoon is here

AP Photo
AP Photo/Nick Ut
Science Video

Interactives
50 years of missions to Mars
New Hubble Captures New Images
In retrospect: Race to the moon
Hubble Telescope: A spy on the universe
Preparing for launch after standing down last fall
Lunar Testing in Washington
Landing on Mars
Take a Tour of the International Space Station
Lunar Eclipse Seen Around the World
Documents
NASA Economic Impact Report (March 2008)
Latest News
Audit: NASA doesn't have the money for big rockets

NASA names building for moonwalker Neil Armstrong

Commercial shipment arrives at space station

Buy AP Photo Reprints
Multimedia
Why Scientists Believe The Moon is Shrinking

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:

---

Online:

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

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

© 2014 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed. Learn more about our Privacy Policy and Terms of Use.