Sometimes the moon's shadow is above the earth and sometimes it's below the earth and on rare occasions the moon will cast a shadow over the earth. Bright stars and planets also will become visible.
The only safe way to look directly at the uneclipsed or partially eclipsed sun is through special-purpose solar filters, such as eclipse glasses or handheld solar viewers. These cosmic moments where nature speaks to us in an emotional way, sometimes come loud, like thunderstorms, storms, hurricanes and earthquakes, but this one... will be silent.
"It's literally the difference between day and night", he said. There are other ways to observe the sun safely, to observe the eclipse safely.
Coast to coast, from OR to SC, 14 states will - over a span of nearly two hours - experience more than two minutes of darkness in the middle of the day. The continental U.S. covering 14 states will be able to experience total darkness on #August 21St for approximately 2 minutes, and two hours of a partial eclipse.
The direct path of the solar eclipse is called the path of totality and it will be 70 miles wide.
The phenomenon will be observed between 10:15 a.m.
Passing over Salem, Oregon, around 1:15 p.m. EDT, the moon's shadow will race across Idaho Falls, Casper, Wyoming, most of Kansas City and parts of St. Louis before passing over Nashville - the largest city directly in the path of totality - and then darkening the sky over Greenville, Columbia and Charleston, South Carolina.
The space agency will livestream and broadcast the event from the College of Charleston starting at 1 p.m. on August 21 using cameras aboard several high-altitude balloons, according to a press release from the College of Charleston. That's when the moon moves between the earth and the sun, blocking out light from the sun.
The U.S. Postal Service has released a special postage stamp for the event. People are being warned to use special equipment to watch the eclipse, including specialised solar viewing equipment.
The hashtag #eclipse2017 is being utilized throughout the social media sphere to commemorate the event that won't happen again until April 2024.