In peak demand for the August 21 solar eclipse in North America, these specs are all about protecting the peepers.
If your glasses are made by one of the 12 eclipse glasses makers that meet the requirements of NASA and American Astrological Standards, they're good forever, NASA said.
According to NASA, as long as the lenses aren't scratched or otherwise damaged, you can use them indefinitely.
The total solar eclipse has come and gone, but those special glasses don't need to be thrown away just yet.
The Denver Museum of Nature and Science will be collecting eclipse glasses through September 30.
Thousands watched the moon's shadow fall over the United States in the first total solar eclipse to spread across the country in almost a century.
Astronomy Without Borders, an organization that works to bring astronomy resources to less fortunate communities, will repurpose them to send to underserved schools in South America and Asia for the 2019 eclipse. There are really only two things to do with those solar-filter glasses now: Save them for the next eclipse, or donate them to a good cause. The lenses may be able to be recycled with camera film, so Earth 911 suggests contacting a local camera shop.
They are collecting glasses through the end of August in a white mailbox located outside of the emergency management office located at 1420 Highland Drive in Washington.
If you do end up tossing them, try to put them in the recycling bin.