Tracy Caldwell – Dyson – Sokol portrait photo This acrylic contains fragments from

Tracy Caldwell – Dyson – Sokol portrait photo This acrylic contains fragments from This acrylic contains fragments from each Space Shuttle that went into orbit each fragment has been flown into space:Space Shuttle Columbia: Flown insulationSpace Shuttle Challenger: Flown insulationSpace Shuttle Discovery: Flown insulationSpace Shuttle Atlantis: Flown insulationSpace Shuttle Endeavour: Flown insulationAny items from the Space Shuttle Challenger are incredibly rare as they were all secured after the explosion of the orbiter and little was released before such as this metal insulation the Italian Space Agency and the Russian space program