PHOTOGRAPH BY EVARISTO SA, AFP, GETTY IMAGES
Tomorrow’s “Blood Moon” is the second in an incredibly rare set of four lunar eclipses that will be visible across North America.
Lunar eclipses occur because the moon passes behind the Earth and into our shadow. This alignment usually occurs only once every couple of years. This year’s lunar eclipse is one of a tetrad, or series of four, over the next two years. We won’t see this tetrad again for two decades.
Almost all of North America is going to be able to view this beautiful spectacle, particularly the western US. It will also be viewable in Hawaii, Australia, Japan, and most of the Pacific. The eclipse will begin in your evening hours if you live in one of those regions.
In South America, only early stages of the eclipse will be visible. The moon won’t be in y...
