Watch the Lunar Eclipse Live

Northern Hemisphere observers can watch event via live feed.

Though the celestial phenomenon will be visible only in the Eastern Hemisphere, armchair astronomers can watch a live feed of the eclipse thanks to SLOOH. The Internet-based space-tracking service is broadcasting the eclipse with its robotic telescopes on the Canary Islands (map) starting at 3 p.m. ET on April 25.

Here's what else you need to know about the rare lunar event.

A lunar eclipse occurs when the sun, Earth, and moon align. During total lunar eclipses, the entire moon is engulfed in Earth's darkest shadow. But during partial eclipses, the moon never completely goes dark or turns red—only a portion of its disk appears to go dim. (Read about a total

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