The sky could look a little red in the overnight hours as a blood moon casts a crimson color over the United States. The moon going into Friday morning will undergo a rare total lunar eclipse, which is when the sun,

Earth’s shadow will block most of the light that illuminates the lunar surface, creating what is known as a blood moon.

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