Millions of Americans will be staring up at the sky on August 21st, when the total eclipse occurs. You'll need special glasses to protect your eyes, but NASA says it is seeing lots of fakes on the market, which could prove dangerous.
Manufacturers, such as Rainbow Symphony, are cranking out millions of safety glasses for the upcoming solar eclipse and shipping them all over the U.S.
On August 21st, the moon will pass between the earth and the sun. Most of the country will see a partial eclipse, but millions will get to witness a total eclipse as the moon completely blocks the sun on a narrow path from Oregon to South Carolina.
Rainbow Symphony's glasses are certified safe, but N.A.S.A. warns there are plenty of phony glasses on the market, which could be dangerous.
N.A.S.A.'s Alex Young says fake glasses are being sold in stores and online, and can do real harm if you use them during the eclipse.
"They damage the cells in your eyes, they damage your retinas and the damage can be permanent," he says.
To make sure your glasses are safe, look for the certified ISO icon and the number 12312-2.
Also, to make sure they properly block the light, put them over an LED light and you should see nothing. Fake glasses will let you see the LED right through. According to Alex, "this is an immediate indication that these glasses are not safe for looking at the sun."
It's also important that the lenses are not scratched or damaged; this will help make sure you see the eclipse without hurting your sight.
Around 7,000 libraries across the U.S. are distributing safety-certified glasses. The American Astronomical Society has a list of reputable manufacturers and authorized dealers at https://eclipse.aas.org/resources/solar-filters.