The rare total solar eclipse follows a 2,600-mile swath starting in Oregon and ending in South Carolina, making it a prime event for skywatchers coast-to-coast.
People have flocked to 14 states across middle America from Oregon to South Carolina to get a prime viewing spot of the solar eclipse, where the moon will block the entire face of the sun and cause darkness.
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Check out these scenes from throughout the country as people watch the eclipse.
The moon covers the sun during a total eclipse Monday, Aug. 21, 2017, near Redmond, Ore. (AP Photo/Ted S. Warren)
A crowd gathers in front of the Hollywood sign at the Griffith Observatory to watch the solar eclipse in Los Angeles on Monday, Aug. 21, 2017. (AP Photo/Richard Vogel)
The moon almost totally eclipses the sun during a near total solar eclipse as seen from Salem, Ore., Monday, Aug. 21, 2017. (AP Photo/Don Ryan)
President Donald Trump, first lady Melania Trump and their son Barron watch the solar eclipse from the White House. (Andrew Harnik/AP)
C. D. Olsen adjusts one of his vintage style cameras which he plans to use during the total solar eclipse on the campus of Southern Illinois University on August 21, 2017. (Scott Olson/Getty)
In this NASA handout, the International Space Station (bottom right), with a crew of six onboard, is seen in silhouette as it transits the Sun. (Joel Kowsky/NASA via Getty)
Brian Marriott of Boston, Massachusetts looks in a storage container on top of his car before watching the solar eclipse at South Mike Sedar Park on August 21, 2017. (Justin Sullivan/Getty)
People set up cameras and telescopes as they prepare to watch the total eclipse at South Mike Sedar Park on August 21, 2017 in Casper, Wyoming. (Justin Sullivan/Getty)
In this NASA handout, the Sun is seen as it rises behind Jack Mountain head of the solar eclipse, August 21, 2017, Ross Lake, Northern Cascades National Park, Washington. (Bill Ingalls/NASA via Getty Images)
Catalina Gaitan, from Portland, Ore., tries to shoot a photo of the rising sun through her eclipse glasses at a gathering of eclipse viewers in Salem, Ore., Monday, Aug. 21, 2017. (AP Photo/Don Ryan)
Mike Newchurch, left, professor of atmospheric chemistry at the University of Alabama in Huntsville, and graduate student Paula Tucker prepare a weather balloon. (AP Photo/Mark Humphrey)