A total solar eclipse, dubbed the "Great American Eclipse," was seen across a narrow portion of the contiguous United States from Lincoln Beach, Oregon, to Charleston, South Carolina. In other countries, the celestial event was visible only as a partial eclipse.

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© AP Photo / Charles Sykes/Invision for Royal Caribbean International
Actress and Royal Caribbean Adventurist Shay Mitchell bears witness to the Great American Eclipse aboard the Royal Caribbean's Oasis of the Seas, on August 21. The ship sailed along the path of totality, offering passengers an unobstructed view at sea.

A multiple exposure image shows the solar eclipse as it creates the effect of a diamond ring as seen from Clingmans Dome, which at 6,643 feet (2,025 meters) is the highest point in the Great Smoky Mountains National Park, Tennessee, US.

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© AP Photo / Michael Noble Jr.
A crowd reacts to the view of a partial solar eclipse as it peaks at over 70 percent coverage on August 21 in New York, US.

White House Senior Adviser Ivanka Trump and Commerce Secretary Wilbur Ross (left) watch the solar eclipse from the Truman Balcony at the White House in Washington, US.

A woman makes a heart shape with her hands during a partial eclipse of the sun over the Roque Nublo mountain at the Canary Island of Gran Canaria, Spain, on August 21.

As millions of people across the United States experienced a total eclipse as the umbra, or moon’s shadow passed over them, only six people witnessed the phenomenon from space. Viewing the eclipse from orbit were NASA’s Randy Bresnik, Jack Fischer and Peggy Whitson, European Space Agency’s Paolo Nespoli, and Roscosmos’ Commander Fyodor Yurchikhin and Sergey Ryazanskiy. The space station crossed the path of the eclipse three times as it orbited above the continental United States at an altitude of 250 miles (402 kilometers).

The Saint-They Chapel is seen in silhouette at sunset during a partial solar eclipse, as the moon passes in front of the sun, seen at the Pointe du Van in Brittany, France, on August 21.

A Mexican girl looks through a telescope at the beginning of the partial solar eclipse, at the esplanade of the Museum of Natural History in Mexico City, Mexico, where astronomy buffs set up telescopes fitted with special sun filters in parks and squares.

This composite image shows the progression of a partial solar eclipse over Ross Lake, in Northern Cascades National Park, Washington, US.

Without his protective glasses on, US President Donald Trump looks up towards the solar eclipse while viewing with his wife Melania and son Barron at the White House in Washington on August 21.

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© AP Photo / David Goldman
Shadows from a near total solar eclipse are projected on a sidewalk as a pedestrian passes in midtown Atlanta, US.

The last glimmer of the sun is seen as the moon makes its final move over the sun during the total solar eclipse on August 21 above Madras, Oregon, US.

A man takes photos during the solar eclipse using a makeshift filter placed in front of his camera lens at the Miraflores Museum in Guatemala City.

Orlando Duque of Colombia dives from the 20 meter platform into a pool in front of a full solar eclipse in McMinnville, Oregon, US, on August 21.

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© AP Photo / Mark Humphrey
Plastic pink flamingos with solar eclipse viewing glasses at the camping site of Grady and Margaret Beasley, of Crystal Beach, Texas, in a location that was in the path of totality and at the point of greatest intensity of the solar eclipse.

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© AP Photo / Richard Vogel
A girl is lifted up to see the solar eclipse through a telescope as a large crowd gathers at the Griffith Observatory to watch the solar eclipse in Los Angeles on August 21.

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© AP Photo / Mark Humphrey
The moon passes by the sun after the total solar eclipse on the Orchard Dale historical farm near Hopkinsville, Kentucky, which was both in the path of totality and at the point of greatest intensity.

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© AP Photo / John Minchillo
A boy watches the sun moments before the total eclipse in Nashville, Tennessee.

A partial eclipse of the sun, as it sets, is cast on a traffic guide post through the lens of binoculars at the Puerto del Viento mountain pass in Ronda, southern Spain, on August 21.

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© AP Photo / Mary Altaffer
A woman watches the eclipse from a park on the Lower East Side of Manhattan in New York.
