In the Dark!
This coming Monday (21Aug17), a partial eclipse will be visible in every state. A total solar eclipse, which is when the moon completely covers the sun, will occur across 14 states - including North and South Carolina - in the continental U.S. along a 70-mile-wide (112-kilometer-wide) swath of the country.
While it’s common sense not to stare directly at the sun with the naked eye for risk damaging your vision, it bears repeating that that the same holds true for a partially eclipsed sun. Only with special-purpose solar filters, such as eclipse glasses or a handheld solar viewer, you can safely look directly at a partially eclipsed sun.
NASA recommends that people who plan to view the eclipse should check the safety authenticity of viewing glasses to ensure they meet basic proper safety viewing standards.
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
- Ordinary sunglasses -- even very dark ones -- should not be used as a replacement for eclipse viewing glasses or handheld solar viewers
- Do not use homemade filters