"In a total lunar eclipse, the entire moon falls within the darkest part of Earth’s shadow, called the umbra. When the moon is within the umbra, it appears red-orange. Lunar eclipses are sometimes called 'blood moons' because of this phenomenon," Caela Barry wrote for NASA.

A stunning Blood Moon March 13/14 caps off plenty of planetary action and sparkling stars in the sky this week.

For the first time in more than two years, the full moon will plunge into the Earth's dark inner shadow, producing a total lunar eclipse over the Bay Area.