While glasses were absolutely necessary for last year's solar eclipse, they are not needed to safely view this year's total lunar eclipse.

During a lunar eclipse, which is when the Earth lines up exactly between the moon and the sun, the moon appears darker because the Earth obscures the sun with its shadow. Only light from Earth’s atmosphere reaches the moon, which can tint the moon reddish with light reflected from sunsets and sunrises on Earth.

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.