NASA issues safety warning for unsafe eclipse glasses

A total solar eclipse, which is when the Moon completely covers the Sun, will occur across 14 states in the continental U.S. on Aug 21, 2017. Credits: NASA

WASHINGTON, D.C. (WKRN) — Now that a total solar eclipse is just one month away, NASA has issued a warning to let people know unsafe eclipse glasses are being distributed by “unscrupulous companies.”

The space agency recommends only using eclipse glasses with ISO 12312-2 printed on them that have been printed by the four following companies:

American Paper Optics, Rainbow Symphony, Thousand Oaks Optical, and TSE 17.

Watch The 2017 Solar Eclipse At Your Local Library

NASA says buying your eclipse glasses on Amazon does not ensure their safety.

“Make sure to check your eclipse glasses and viewers to verify that they have the correct ISO designation and were manufactured by one of the four companies recognized by NASA as legitimate,” the agency noted.

It’s unsafe to look at the sun for any amount of time as it can possibly be dangerous and lead to permanent damage, hence why purchasing eclipse glasses is so important.

NASA says on its website that one “widely available filter for safe solar viewing” is number 14 welder’s glass. These are sold at most hardware stores.

The total solar eclipse, considered a once-in-a-lifetime experience for many, takes place in just one month on Aug. 21.