Rain clouds obscure the solar eclipse tracking over Spaceship Earth at Epcot at Walt Disney World in Lake Buena Vista, Florida, Aug. 21, 2017.
Joe Burbank/Orlando Sentinel via AP
Solar eclipse watchers were ecstatic as the clouds broke minutes before totality during the total solar eclipse, Aug. 21, 2017, in Isle of Palms, S.C.
Pete Marovich/Getty Images
The solar eclipse over the Statue of Liberty, on Liberty Island in New York, Aug. 21, 2017.
The moon eclipses the sun above the Washington Monument during the Great American Eclipse in Washington, D.C., Aug. 21, 2017.
Jim Lo Scalzo/EPA
In this multiple exposure photograph, the phases of a partial solar eclipse are seen over the Gateway Arch, Aug. 21, 2017, in St. Louis.
Members of the media watch the solar eclipse at the White House, Aug. 21, 2017.
The moon almost totally eclipses the sun during a near total solar eclipse as seen from Salem, Ore., Aug. 21, 2017.
Sisters, from left, Isabelle, Alexandra and Eloise Neve de Mevergnies, watch the solar eclipse from a New York City park, Aug. 21, 2017.
Mark Lennihan/AP Photo
The crowd at the Nashville eclipse-viewing party watches the start of the eclipse at First Tennessee Park, Aug 21, 2017.
Shelley Mays/The Tennessean via USA TODAY NETWORK
The International Space Station, in silhouette, as it transits the sun during a partial solar eclipse seen from Ross Lake, Northern Cascades National Park, Washington, Aug. 21, 2017.
Autumn Stock, 12, Makaya Mackie, 12, and Lupin Amstutz, 13, from Yosemite Park High School react to the total solar eclipse at Madras, Oregon, Aug. 21, 2017.
Peter DaSilva for ABC News
The Great American total solar eclipse travels over the Yaquina Bay Bridge in Newport, Ore., Aug. 21, 2017.
Anna Reed/Statesman Journal via USA TODAY NETWORK
The sun is obscured during the solar eclipse in Depoe Bay, Ore., Aug. 21, 2017.
Members of the Rome Braves watch the eclipse at Spirit Communications Park during a break in minor league baseball, Aug. 21, 2017, in Columbia, S. C.
Sean Rayford/Getty Images
Cheerleaders try out eclipse glasses that they were giving out to visitors at Saluki Stadium on the campus of Southern Illinois University Carbondale, Aug. 21, 2017.
Robert Cohen/St. Louis Post-Dispatch/Polaris
People watch the start of the solar eclipse and raise their hands in prayer in an eclipse viewing event led by Native American elders, at Big Summit Prairie ranch in Oregon's Ochoco National Forest near the city of Mitchell, Ore., Aug. 21, 2017.
Robyn Beck/AFP/Getty Images
Leroy Littlejohn has his photo taken while waiting for a total solar eclipse in Great Smoky Mountains National Park at Clingman's Dome, Aug 21, 2017, in Knoxville, Tenn.
Caitie McMekin/Knoxville News Sentinel via USA TODAY NETWORK
C.D. Olsen adjusts the image on his replica of a kew photoheliograph camera as it displays an image of the sun on the campus of Southern Illinois University before the start of a total solar eclipse in Carbondale, Ill., Aug. 21, 2017.