It's solar eclipse day! Millions of Americans will be in the "path of totality", a 70-mile zone where the moon will block out the sun entirely. ABC News will air a special report Monday, featuring ...

Map showing the path of totality. Click through the following photos for more detailed maps of the eclipse's path through every state that will experience totality (Oregon, Idaho, Wyoming, Nebraska, ...

IDAHO -- What if you could step back and observe the changing tide of time? On Aug. 21, 2017, in the shadow of Idaho's Sawtooth Mountains, the sky was clear even as smoke hung in the air from recent ...

In 2017, we experienced the first Great American Eclipse. Seven years later, the U.S. is once again in the path of another cross-country solar eclipse. In this episode we’ll help you decide what the ...

A total solar eclipse observed from the Harvard College Observatory in March 1970. American scientists prepared to observe the total solar eclipse in Kamen-na-Obi, in the Altai region of the USSR. The ...