So, from our perspective down on Earth, the sun and moon appear to be the same size during a total solar eclipse — which is why the sun gets completely blocked by the moon. Any region that falls within the umbra’s path — known as the path of totality — will experience a total eclipse. A total solar eclipse. The path of totality, the region which will get a total eclipse, stretches across the U.S. from the northwest to the southeast. There hasn’t been a total solar eclipse across the entire U.S. since 1918.

Source: CBC News August 10, 2017 08:48 UTC