NASA Associate Administrator and former astronaut Bob Cabana, autographs a piece of mail with the United States Postal Service’s new stamp celebrating NASA’s James Webb Space Telescope (JWST) on it, at the first-day-of-issue event, Thursday, Sept. 8, 2022, at the Smithsonian’s National Postal Museum in Washington. The stamp, which features an illustration of the observatory, honors Webb’s mission to explore the unknown in our universe – solving mysteries in our solar system, looking beyond to distant worlds around other stars, and probing the structures and origins of our universe and our place in it. Photo Credit: (NASA/Aubrey Gemignani)