This video says about itself:
Lunar Eclipse 101 | National Geographic
30 January 2018
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.