When the moon passes through the Earth's shadow, it causes the moon to look very unusual for a short period of time. This event is called a lunar eclipse, and it occurs roughly twice a year. There's one viewable to folks outside of North America on June 15, so sit back and learn more about how lunar eclipses work in this video! This version of the video is presented in several formats of stereoscopic 3D that can be viewed by many kinds of 3D devices, including common red/blue paper glasses that you might have lying around! Just click the "3D" button on the playbar to pick which version works best for you. If you don't see the version you need, click "Other options" from the pop-up. Credit goes to TheWusa from de.wikipedia.org for the illustrations that this video's light scattering animations are based on. This video is public domain and can be downloaded at: ?http://svs.gsfc.nasa.gov/goto?10787 Like our videos? Subscribe to NASA's Goddard Shorts HD podcast: ?http://svs.gsfc.nasa.gov/vis/iTunes/f0004_index.html? Or find NASA Goddard Space Flight Center on facebook: ?http://www.facebook.com/NASA.GSFC? Or find us on Twitter: ?http://twitter.com/NASAGoddard?
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