Atlantis OV-104 was the fourth NASA shuttle to have made a space flight. It was one of the five reusable shuttles that were used to transport people and equipment into Earth's orbit. Its first flight took place on October 3, 1985. Over the 26 years of service, Atlantis made 33 missions and spent 306 days in orbit around the Earth. The landing of the shuttle on July 21, 2011, after a successful mission to supply the International Space Station, ended the era of the space shuttle. After leaving service, Atlantis was transported to the Kennedy Space Center Visitor Complex, where it now serves as a museum. The Hubble Space Telescope, which orbits in a low Earth orbit, is named after the American astronomer Edwin Hubble. The telescope was launched into orbit by the space shuttle Discovery on April 24, 1990. Since its launch, it has become one of the most important instruments in the history of astronomy, providing an incredible amount of data. The space shuttle Atlantis serviced the Hub.