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

A total lunar eclipse is sometimes called a blood moon thanks to the red or orange tinge it takes on from sunlight filtering through our planet's atmosphere. "It's as if all the world's sunrises and sunsets are projected onto the moon," NASA said. The color effect can be subtle, so don't expect a moon that's as red as a Corvette.