When sunlight hits Earth’s atmosphere during a lunar eclipse, light frequencies toward the blue end of the visible spectrum are scattered outward, away from Earth’s umbra, but those with longer wavelengths, toward the red part of the spectrum, are bent inward and cast onto the moon.

The first total lunar eclipse in more than two years lit up the sky last night as humanity, forever fascinated with the Earth’s only natural satellite, watched.

A total "blood moon" lunar eclipse peaked overnight and lit up skies across the Pittsburgh area and throughout western Pennsylvania.The total eclipse began Friday at 2:26 a.m. and lasted for nearly an hour.