What is lunar eclipse?

A lunar eclipse occurs when the moon crosses directly behind Earth and into its shadow. This process only occurs when the Earth, moon, and sun are intimately aligned. It can only take place on the night of a full moon. The type and length of a lunar eclipse hinges on the moon's closeness to either it's orbit or node.

During a total lunar eclipse, Earth entirely blocks direct sunlight from reaching the moon. The light from the moon appears reddish, which is why many call it a blood moon. Unlike a solar eclipse, which can only be seen from select areas, lunar eclipses may be seen anywhere on the right side of Earth.