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

During the early morning hours, the Earth passed between the sun and moon, casting a shadow over the moon for a total lunar eclipse.

The rare Blood Moon total lunar eclipse started lighting up the sky late Thursday with a bright full Moon. Why it matters: It's the only lunar eclipse visible from the U.S. this year and the first total lunar eclipse since November 2022.