Photos: Solar eclipse at Carhenge in Nebraska

Peyton Briggs of Rapids City South Dakota watches as the moon begins to eclipse the sun over Carhenge in Alliance Nebraska Monday, Aug. 21, 2017.

The total solar eclipse darkens the sky over Carhenge in Alliance Nebraska Monday, Aug. 21, 2017.

Sophia Ernstrom Mars Akselsen both of Denver watch as a total solar eclipse darkens the sky over Carhenge in Alliance Nebraska Monday, Aug. 21, 2017.

Observers watch as a total solar eclipse darkens the sky over Carhenge in Alliance Nebraska Monday, Aug. 21, 2017.

Thousands flock to Carhenge in Alliance Nebraska to wait for the total solar eclipse Monday, Aug. 21, 2017.

The sun's corona is visible as the moon eclipses the sun over Carhenge in Alliance Nebraska Monday, Aug. 21, 2017.

Megan Shrewsbury and Kim Galyen, both firefighters from Alliance dress as aliens to celebrate the eclipse as Carhenge in Alliance Nebraska Monday, Aug. 21, 2017.

Erin Sanders and Jake Baines of Denver lay watch as a total solar eclipse darkens the sky over Carhenge in Alliance Nebraska Monday, Aug. 21, 2017.

Tavon Boaman, Bella Demitanda, and Connor Christensen, all of Ft. Collins Colorado arrange crystals into a pattern at Carhenge in Alliance Nebraska before the total solar eclipse Monday, Aug. 21, 2017.

The moon begins to eclipse the sun over Carhenge in Alliance Nebraska Monday, Aug. 21, 2017.

The total solar eclipse darkens the sky over Carhenge in Alliance Nebraska Monday, Aug. 21, 2017.

Observers watch as a total solar eclipse darkens the sky over Carhenge in Alliance Nebraska Monday, Aug. 21, 2017.

Ben Mesander, of Longmont Colorado uses a 4x5 view camera to shoot Carhenge in Alliance Nebraska before the total solar eclipse Monday, Aug. 21, 2017.

Dennis Woods-Doderer Iowa City Iowa sleeps under Carhenge in Alliance Nebraska before the total solar eclipse Monday, Aug. 21, 2017.

Thousands flock to Carhenge in Alliance Nebraska to wait for the total solar eclipse Monday, Aug. 21, 2017.

Thousands flock to Carhenge in Alliance Nebraska to wait for the total solar eclipse Monday, Aug. 21, 2017.

Thousands flock to Carhenge in Alliance Nebraska to wait for the total solar eclipse Monday, Aug. 21, 2017.

The sun's corona is visible as the moon eclipses the sun over Carhenge in Alliance Nebraska Monday, Aug. 21, 2017.

Jason Castro of San Antonio watches as the moon begins to eclipse the sun over Carhenge in Alliance Nebraska Monday, Aug. 21, 2017.

Observers watch as a total solar eclipse darkens the sky over Carhenge in Alliance Nebraska Monday, Aug. 21, 2017.

Solar eclipse viewers gaze at the sky as the start of the 2017 Solar Eclipse begins at Carhenge in western Nebraska Aug. 21, 2017.

Peyton Briggs, 10, of Rapids City, South Dakota, checks out the beginning of the solar eclipse at Carhenge in western Nebraska.

Eclipse viewers gather ahead of the 2017 Solar Eclipse at Carhenge near Alliance, Neb., on Aug. 21, 2017. The site is in the path of totality. The eclipse is the first exclusive-to-the-United States total eclipse since 1776.

The Milky Way Galaxy can be seen over Carhenge near Alliance, Neb., on Aug. 20, 2017, ahead of the 2017 Solar Eclipse. The site is in the path of totality. The eclipse is the first exclusive-to-the-United States total eclipse since 1776.

NASA ambassador Angela Gibson passes out solar eclipse glasses to Aronne Marinelli, 17, and his father Ron, of Thornton Colo. at Carhenge in western Nebraska, on Aug. 21, 2017.