Nicknamed "blood moon," some ancient cultures regarded a total lunar eclipse as an ominous event. Today, this celestial phenomenon generates excitement and wonder. Unlike a solar eclipse, which may require travel to see, total lunar eclipses can often be observed from the entire nighttime-half of the Earth. Learn what causes a lunar eclipse and how it gains its crimson coloring.<br />➡ Subscribe: <br /><br />About National Geographic:<br />National Geographic is the world's premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and filmmakers, Nat Geo gets you closer to the stories that matter and past the edge of what's possible.<br /><br />Get More National Geographic:<br />Official Site: <br />Facebook: <br />Twitter: <br />Instagram: <br /><br />Lunar Eclipse 101 | National Geographic <br /><br /><br />National Geographic
