The video gallery below contains an instructional video on interpreting and using this web app

The video gallery below contains an instructional video on interpreting and using this web app

On August 21, 2017, millions of people across the United States will see nature's most wondrous spectacle — a total eclipse of the Sun. It is a scene of unimaginable beauty; the Moon completely blocks the Sun, daytime becomes a deep twilight, and the Sun’s corona shimmers in the darkened sky. This is your guide to understand, prepare for, and view this rare celestial event.

Copyright © Geoff Sims, 2013

Copyright © Geoff Sims, 2013

A total solar eclipse is unlike anything you've seen in your life. As totality approaches, you will see the astonishing sight of day turning to night and the Sun's corona blazing in the sky.

Best places to see eclipse >

A common question is where is the best place to see the eclipse. Truth be told, there are many great spots and here are of our ten picks that, weather permitting, will have a great view.

10-foot-long map of eclipse >

If you were to print this map focused on the path of totality, it would be over 10 feet long! This map is packed with data and insights on the eclipse and is a detailed planning guide for you. 

Future total solar eclipses >

It's been some time since the last total solar eclipse in the United States, but a good run of total solar eclipses will arrive in North America in the coming decades. 

Detail of 2017 eclipse map

Detail of 2017 eclipse map

This is truly a great American eclipse because totality will sweep the nation from the Pacific to the Atlantic. Nearly everyone in the US can reach this total solar eclipse within one day's drive. 

The last eclipse >

The next eclipse is the total solar eclipse of March 9, 2016 followed by the annular solar eclipse of September 1, 2016. You'll find maps and descriptions of the eclipse here.

Download desktop map >

You can download this detailed map of the 2017 eclipse as a desktop background on your Mac or PC! This map is sized to a resolution to match common desktop screen sizes. 

April 8, 2024 total eclipse >

You should make every effort to see the 2017 eclipse from inside the path of totality. In case you can't, you've got another chance on April 8, 2024. 

Detail from Smith's Illustrated Astronomy, 1860

Detail from Smith's Illustrated Astronomy, 1860

An eclipse is a cosmic billiard shot — the Sun, Moon, and Earth line up to reveal the Sun's atmosphere, it's corona. Eclipses on Earth occur only because of an amazing celestial coincidence. 

Eclipse history >

In 2017, it will have been 26 years since the last American total solar eclipse. Totality visited the USA in 1905, 1918, 1932, 1945, 1963, 1970, 1972, 1979, and 1991. 

Links we like >

There are some great web resources for the 2017 eclipse and we've compiled a list of our favorites. We recommend all of these sites as authoritative and informative. 

Quality merchandise >

We are offering quality eclipse-related merchandise at our online store. Eclipse glasses are guaranteed to be in short supply as eclipse day approaches.