Limited edition flown swatch of multilayer insulation blanket removed from the exterior of the Hubble Space Telescope, numbered 48/75. The swatch measures .75″ x 1″ and is encased in a 4.5″ x 3.25″ x 1″ Lucite display with information sheet: "This aluminized polyimide film is from an original multi-layer insulation (MLI) blanket covering the exterior of the Hubble Space Telescope. It was removed on December 24, 1999 from the Support System Module's Bay 10 door during Servicing Mission 3A by STS-103 astronauts Steven Smith and John Grunsfeld. This material flew on-orbit more than 1.5 billion miles from the April 24, 1990 launch of STS-31 (Hubble deployment) to the STS-103 landing on December 27, 1999." In fine condition.