Space Shuttle with Booster, "Discovery" Airplane Model Toy. Mahogany Wood Model Aircraft Scale: 1/146.Space Shuttle Discovery (Orbiter Vehicle Designation: OV-103) is one of the three currently operational orbiters in the Space Shuttle fleet of NASA, the space agency of the United States. (The other two are Atlantis and Endeavour.) When first flown in 1984, Discovery became the third operational orbiter, and is now the oldest orbiter in service. Discovery has performed both research and International Space Station (ISS) assembly missions. The spacecraft takes its name from previous ships of exploration named Discovery, primarily HMS Discovery, the sailing ship that accompanied famous explorer James Cook on his third and final major voyage. Others include Henry Hudson's ship Discovery which he used in 1610?1611 to search for a Northwest Passage, and RRS Discovery, a vessel used for expeditions to Antarctica in 1901?1904 by Scott and Shackleton (and still preserved as a museum). The shuttle shares a name with Discovery One, the fictional Jupiter spaceship from the films 2001: A Space Odyssey and 2010. Discovery was the shuttle that launched the Hubble Space Telescope. The second and third Hubble service missions were also conducted by Discovery.