The moon will appear a striking reddish color in a few weeks when a magnificent total lunar eclipse becomes visible all across the United States.

A lunar eclipse happens when the Earth moves between the Sun and the Moon. That blocks out the light that would usually make it to the Moon and instead covers it in a shadow. That

Skywatchers across the world will witness the first total lunar eclipse in three years. Here’s who will have the best views—and what gives the moon its eerie red tint.