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What to know about March's full "Blood Worm Moon," a total lunar eclipse

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March's full moon , known as the Worm Moon , will pass into Earth 's shadow on March 13 .

Total lunar eclipse will be visible from Earth 's Western Hemisphere .

Lunar eclipses are sometimes called blood moons because of the phenomenon.

The Worm Moon nickname may have come from earthworms typically found as spring nears, according to the Old Farmer's Almanac .