The 2008 U.S. postage stamp honoring Hubble was denominated at 41 cents.
The United States Postal Service released the stamp on March 6, 2008, as part of its American Scientists sheet. The design was created by artist Victor Stabin, and the sheet also honored Gerty Cori, Linus Pauling, and John Bardeen.
The stamp appeared during the era when a standard U.S. first-class letter cost 41 cents. That rate began in May 2007, but it rose to 42 cents in May 2008, making the stamp’s denomination especially easy to confuse with the next year’s rate.
The stamp celebrated Edwin Hubble, whose observations established that galaxies exist beyond the Milky Way and helped demonstrate that the universe is expanding. It honored the astronomer, not the Hubble Space Telescope, which was named after him in 1983.