A total lunar eclipse will make the moon appear red across the Western Hemisphere during the "Blood Worm Moon" this week.

Skywatchers across the world will witness the first total lunar eclipse in three years. Here’s who will have the best views—and what gives the moon its eerie red tint.

The total lunar eclipse in Virgo is coming the night of Thursday, March 13, reaching totality at 11:54 p.m. PT and Friday, March 14 at 2:54 a.m. ET. Lunar eclipses take place when the sun, Earth and moon line up, and the Earth's shadow (or umbra) covers the moon. There are three types of lunar eclipses: Total, partial, and penumbral.