AAS also recommends avoiding the use of adjustable or auto-darkening welding helmets or similar products to view the sun. “Many don’t go as dark as shade 13 or 14, and even those that do post ...
(NEXSTAR) – Astronomers, optometrists and even the U.S. government have been warning us for months to get a pair of ISO-certified eclipse glasses to watch the total solar eclipse on April 8.