The Western US will get a celestial treat early Tuesday morning: a total lunar eclipse. Residents of the Western Hemisphere and eastern Asia will get at least a glimpse of the spectacle, but Europeans will miss out—the moon will be below the horizon. Space.com tells you how to make the most of the event, wherever you may be.
Lunar eclipses happen when the Earth is sandwiched between the sun and the moon, obstructing the sun from reflecting off the lunar surface. As the full moon moves through the Earth's shadow, it appears to change color, glowing copper and brown or gray. Tuesday's eclipse will be visible just about everywhere the most recent lunar eclipse, in March, wasn't.