English: After its launch on May 14, 1973, it was immediately known that there were some major problems with Skylab. The large, delicate, meteoroid shield on the outside of the workshop was ripped off by the vibration of the launch. Its tearing off caused serious damage to the two wings of solar cells that were to supply most of the electric power to the workshop. Once in orbit, the news worsened. The loss of the big shade exposed the metal skin of the workshop to the sun. Internal temperatures soared to 126 degrees F. This heat not only threatened its habitation by astronauts, but if prolonged, would cause serious damage to instruments and film. After twice delaying the launch of the first astronaut crew, engineers worked frantically to develop solutions to these problems and salvage the Skylab. After designing a protective solar sail to cover the workshop, crews needed to practice using the specially designed tools and materials to facilitate the repair procedure. Marshall Space Flight Center's Neutral Buoyancy Simulator (NBS), was used to practice these maneuvers. Pictured here are the astronauts in the NBS deploying the protective solar sail. On May 25, 1973, an Apollo command and service module was launched and later docked with Skylab. The next day, astronauts Conrad and Kerwin were able to complete the needed repairs to Skylab, salvaging the entire program.