Watch the total solar eclipse travel across the US
This video can not be played.
This live stream has finished.
This event has now finished.
People in the United States are preparing for the spectacular sight of a total solar eclipse.
As the Moon passes in front of the Sun, it will cast a shadow that will travel across the US from the Pacific to the Atlantic coast.
The Moon's shadow will trail a 113km (70 miles)-wide path of complete black-out, but the eclipse will also be partially visible form surrounding areas.
Source: Reuters Live/NASA TV