Inside this aluminum case is a commercially-available Nikon camera flash used during astronaut spacewalks on the STS-121 mission in July 2006. Mission specialists Mike Fossum and Piers Sellers carried out three extra-vehicular activites to test the Space Shuttle Discovery's new Canadarm extension, practice thermal tile repair techniques, and perform installations and maintenence on the International Space Station. The camera and its flash were attached to the astronauts using a tether and would have been used when photographs were needed during nighttime portions of orbits.
Missing from this artifact is the thermal blanket that insulated the flash unit from the extreme temperature changes in space.
NASA transferred this artifact to the Museum in 2016.
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.