Watch Total Solar Eclipse on August 21, 2017 Online Live Stream
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A total solar eclipse will occur on Monday, August 21, 2017. The event has been described as the “Great American Eclipse” as it will be visible in totality only within a band across the entire contiguous United States. The previous time a total solar eclipse was visible across the entire contiguous United States was during the June 8, 1918 eclipse.
A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring the image of the Sun for a viewer on Earth. A total solar eclipse occurs when the Moon’s apparent diameter is larger than the Sun’s, blocking all direct sunlight, turning day into darkness. Totality occurs in a narrow path across Earth’s surface, with the partial solar eclipse visible over a surrounding region thousands of kilometers wide.
This eclipse is the 22nd of the 77 members of Saros series 145, which also produced the solar eclipse of August 11, 1999. Members of this series are increasing in duration. The longest eclipse in this series will occur on June 25, 2522 and last for 7 minutes and 12 seconds.
Total eclipse viewing events
Viewing from outside the United States
A partial eclipse will be visible across the width of Canada, ranging from 89% in Victoria, British Columbia to 11% in Resolute, Nunavut.
Central America, Mexico, Caribbean islands
A partial eclipse will be visible from Central America, Mexico, and the Caribbean islands.
In northwestern Europe, the eclipse will only be visible as a partial eclipse, in the evening or at sunset. Only Iceland, Ireland and Scotland will see the eclipse from beginning to end; in the rest of the UK, Norway, the Netherlands, Belgium, France, Spain and Portugal, sunset will occur before the end of the eclipse. In Germany, the beginning of the eclipse will be potentially visible just at sunset only in the extreme northwest of the country. In all regions east of the orange line in the map, the eclipse will be invisible.
- Eclipse 2017
- The Great American Eclipse
- Sky and Telescope magazine
- The US Naval Observatory (includes technical data)
- Astronomers Without Borders
- Libraries giving away eclipse glasses
- AAS list of eclipse glasses and filters resources
Viewing safety information
- The Exploratorium
- Mr. Eclipse (Fred Espenak’s site)
- My own blog
- Celestron (with several videos)
- The American Astronomical Society
Apps and software
- AAS list of apps and software
- Map of the sky during the eclipse
- Totality: Big Kid Science app (I have this and it’s fun)
- Google/Berkeley Megamovie project
Great American Eclipse
A total solar eclipse is coming to America on August 21, 2017. Find maps, videos, how to view, best places to go, eclipse glasses, and more.
Total Solar Eclipse 2017 – The Great American Eclipse!
Even the great eclipse of 1918, which swept across the U.S. from west to east … June 1257 (!) in order to find another eclipse which touched only American soil!
Great American Eclipse 2017 | Astronomy.com
The Moon’s shadow will race across the continental United States from Oregon to South Carolina, earning this event its nickname as the Great American Eclipse.
Solar eclipse of August 21, 2017 – Wikipedia
A total solar eclipse will occur on Monday, August 21, 2017. The event has been described as the “Great American Eclipse” as it will be visible in totality only …