Western North America will have a front-row seat on Saturday as the full moon gets painted red in the briefest eclipse this century.

The most spectacular part of the eclipse will be the totality phase, when Earth's shadow completely covers the moon and turns it an eerie red. The moon will only skirt the deepest and darkest part of Earth’s shadow, or umbra, and totality could last anywhere from nine to 12 minutes.

This weekend's blood moon will be the third of four lunar eclipses, dubbed a tetrad, over the course of two years. The pattern won’t repeat for another 20 years or so. The first and second happened in April and September 2014, and the last of