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

During a total lunar eclipse, the moon appears to have a red tint. This is where the term “blood moon” comes from. A blood moon gets its hue from the light in the Earth’s atmosphere.

This week, a total lunar eclipse will turn the moon a coppery red across the Western Hemisphere. The so-called blood moon will be visible for about an hour starting at 2:26 a.m.

In Incan mythology, for instance, a large cat, often a jaguar, was believed to attack the Moon during an eclipse, causing its blood-red appearance. For optimal viewing of the March 2025 "blood ...