NASA warns of unsafe viewing glasses ahead of solar eclipse

On Aug. 21, the moon will pass between the Earth and the sun, casting a shadow that will race across the heartland of America at some 1,500 mph, moving over 14 states from Oregon to South Carolina as the United States experiences its first total eclipse of the sun since 1979 and the first coast-to-coast eclipse in 99 years.Ahead of the event, NASA is warning families about unsafe solar glasses. The American Astronomical Society has verified five manufacturers that make safe eclipse glasses and h