A total solar eclipse will pass across a long and thin path of U.S. soil stretching from Oregon to South Carolina this summer on August 21. An Eclipse occurs when the moon, sun and Earth align, allowing the moon to cast a shadow on the Earth's surface.
While residents in all states will be able to see a partial eclipse, only those in a handful of states will be able to see the "total eclipse" -- the perfect moment in which the sun's light is fully blocked, allowing star gazers to stare directly at the moon and see a halo. (pictured on the right)
The last total eclipse was visible in the U.S. on February 26, 1979, but the shadow onlypassed across Washington, Oregon, Idaho and Wyoming and up into Canada.
The next time an eclipse will be in the U.S. will be on April 8, 2024 and will stretch from Texas to Ohio.