On August 21, 2017, all of North America will experience an eclipse of the sun. This means that Earth, the sun, and the moon, which all orbit in space in predictable paths, will align. The moon will move between the sun and Earth blocking the light of the sun. Thus, the moon will cast a shadow on Earth. Here in Gwinnett, we will experience a near total eclipse between 2:35 and 2:40 p.m. that will last approximately two minutes. This alignment of the sun, the moon, and Earth will mark the first time this phenomenon has occurred coast-to-coast in our country in nearly 100 years.
(https://go.nasa.gov/2pC0lhe (link is external))
PLEASE USE THE PROPER VIEWING DEVICE
The only safe way to look directly at the uneclipsed or partially eclipsed sun is through special-purpose solar filters, such as “eclipse glasses” (example shown at left) or hand-held solar viewers. Homemade filters or ordinary sunglasses, even very dark ones, are not safe for looking at the sun.
According to NASA, eclipse viewing glasses and handheld solar viewers should meet all the following criteria:
- Have certification information with a designated ISO 12312-2 international standard
- Have the manufacturer’s name and address printed somewhere on the product
- Not be used if they are older than three years, or have scratched or wrinkled lenses
- Not use homemade filters or be substituted for with ordinary sunglasses — not even very dark ones — because they are not safe for looking directly at the Sun