Today (April 8), a total solar eclipse will plunge parts of 15 U.S. states into sudden darkness as the moon's enormous shadow sweeps across the continent.
Crossing northeast from Mexico to Canada over the course of several hours, the April 8 total solar eclipse will be visible to an estimated 44 million people who live in the path of totality — the path of the moon's shadow, and the only place where the total phase of the eclipse will be visible — while a partial eclipse will be visible across nearly the entire U.S.
