What did the US post office do that had never been done in its history The martian?

In "The Martian," the U.S. Postal Service implemented a unique initiative by announcing a special stamp featuring the image of the character Mark Watney, played by Matt Damon in the film adaptation. This marked the first time the USPS created a stamp specifically inspired by a fictional character from a movie, showcasing the intersection of pop culture and postal services. This initiative aimed to celebrate human ingenuity and exploration, aligning with the themes of the story.