Solar eclipse 2017: How to make sure your eclipse glasses are safe

Total Solar Eclipse

Do not look at the uneclipsed or partially eclipsed sun through an unfiltered camera, telescope, binoculars, or other optical device.

The night before, the pair will spend the night stargazing in a geodesic dome in the OR wilderness.

I mean, there's no real secret in how to safely watch the August 21 show, but it's better to be prepared than endure a lifetime of retina damage, wouldn't you say? If he positioned the moon between the earth and the sun, then he probably drew something like the diagram at MrEclipse.com depicting Solar Eclipse Geometry (the image is copyrighted, otherwise we would display it here, but you can see for yourself).

At its heart, a solar eclipse is what happens when the moon slips between the Earth and the sun, blocking out the light from our closest star by casting a long shadow onto our planet. While the path of totality is quite small, the eclipse will be visible in part from a much wider area. The path of totality crosses over portions of many major cities.

Google has already partnered with others, like the Gordon and Betty Moore Foundation and NASA, to bring two million pairs of eclipse glasses to around 4,800 local libraries in the country. Totality begins at 1:14 p.m. Wherever you choose to go, former NASA astronaut and senior manager Steven Hawley advises booking any travel tickets and hotel reservations way in advance and to expect plenty of traffic on the road.




You never want to look directly at the sun with your naked eyes except during the brief total phase of a solar eclipse, when the moon entirely covers the sun's beaming face.

- Look for eclipse glasses or hand-held devices labeled as compliant with the ISO 12312-2 global standard.

Ordinary sunglasses - even very dark ones - should not be used as a replacement for eclipse viewing glasses or handheld solar viewers. To be on the safe side, the American Astronomical Society suggests choosing equipment from this list of reputable manufacturers. Naturally, the coast is also going to offer up some supremely stunning eclipse views. Craters of the Moon national monument in Arco, Idaho will have a three-day festival with no limit on attendees, public parking and free solar glasses.

Most importantly, the library will provide eclipse glasses for those who wish to literally view the eclipse.

"It's something you remember your entire life, and you will tell stories to your grandchildren about it", Espenak added.

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