2017 Great American Eclipse

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August 21 Total Solar Eclipse (North America)

This will be the first total solar eclipse of the 21st century for the United States, and the first visible in the continental USA since February 26, 1979.

A total eclipse of the Sun occurs when the Moon completely blocks the visible solar disk from view, casting a shadow on Earth. The 70-mile-wide shadow path of the eclipse, known as the “path of totality,” will traverse the country diagonally, appearing first in Oregon (mid-morning local time) and exiting some 2,500 miles east and 90 minutes later off the coast of South Carolina (mid-afternoon local time).

Tens of millions of people in the United States hope to view this rare event, which has not been seen on the U.S. mainland since 1979. The eclipse will travel a narrow path across the entire country for the first time since 1918. The path will run west to east from Oregon to South Carolina and will include portions of 14 states.

A total solar eclipse provides us with the only chance to see the Sun’s corona — its extended outer atmosphere — without specialized instruments.


The Great American Eclipse is 100 days away, and scientists are ready

WASHINGTON — The Postal Service will soon release a first-of-its-kind stamp that changes when you touch it. The Total Eclipse of the Sun Forever stamp, which commemorates the August 21 eclipse, transforms into an image of the Moon from the heat of a finger. The public is asked to share the news on the social web using the hashtag #EclipseStamps.
The June 20, 1:30 p.m. MT First-Day-of-Issue ceremony will take place at the //Art Museum// of the University of Wyoming in Laramie. The University is celebrating the summer solstice on June 20. Prior to the event, visitors are encouraged to arrive at 11:30 a.m. to witness a unique architectural feature where a single beam of sunlight shines on a silver dollar embedded in the floor, which occurs at noon on the summer solstice in the UW Art Museum’s Rotunda Gallery.

The Total Eclipse of the Sun Forever stamps may be pre-ordered at usps.com/shop in early June for delivery following the June 20 nationwide issuance.





NASA Sun Science - with Little SDO
We’re talking about the total solar eclipse happening the U.S. in a little less than a year! On Aug. 21, 2017, the moon will pass between Earth and the sun, creating a total solar eclipse visible along a narrow path stretching from coast to coast. NASA scientists Lika Guhathakurta, Alex Young, and Eric Christian are taking us through how and where to watch the eclipse, the science of eclipses, and what scientists can learn from them.

For detailed maps and information, check out our website: eclipse2017.nasa.gov.


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Racing for the total solar eclipse of 1878
David Baron tells the tale of three scientists, jockeying for position to be there in 1878. They included Thomas Edison, inventor of the phonograph.