Thousands of people have gathered to catch a glimpse of the total solar eclipse as it moves along a narrow corridor across North America.
The first images of areas plunged into darkness came from Mexico.
Follow the eclipse as it crosses North America
Parts of Mexico were in darkness as the eclipse reached totality (Fernando Llano/AP)
At the point of totality, the Moon perfectly blocks the Sun (Jeff Overs/BBC)
Children paused their play on the beach to watch the eclipse begin in Mazatlan, Mexico (Hector Vivas/Getty Image)
People use special protective glasses to observe the event (Henry Romero/Reuters)
The eclipse that began in Mazatlan, Mexico, will be observed by tens of millions of people (Henry Romero/Reuters)
Thousands gathered in early Mexico (Henry Romero/Reuters)
This eclipse is rare due to the number of people living in its path (Henry Romero/Reuters)
Clouds parted for clearer views (Julio Cortez/AP)
This young sky observer tested his eclipse glasses at the New York Hall of Science in Queens, New York (Andrew Kelly/Reuters)
A rainbow formed over Niagara Falls as eclipse watchers arrived at the famous state park near the Canada-U.S. border (Soren Larson/Reuters)
People camped at Prospect Point overlooking the famous falls, hours in advance (SARAH YENESEL/EPA)
Even if New York City is not on the path to totality, it will see up to 90% of the Sun covered by the Moon (Eduardo Munoz/Reuters)
Some 309 people gathered to break the Guinness World Record for the largest group of people dressed as the sun before the eclipse in Ontario (Jenna Zucker/Reuters)
Telescopes have been installed at the Indianapolis Motor Speedway in Indiana for a public viewing event (Michael Conroy/AP)
