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Items tagged with: nationalsunglassesday
Protected eyes ✅ Looking cool ✅
Happy #NationalSunglassesDay 😎 Dr. Keith Manuel created a special titanium alloy frame without hinge screws for @NASA_Astronauts in the early '90s. The super-dark lenses of these shades blocked both UV and IR rays.
https://go.nasa.gov/43QawP7
#NASAhistory
