It has its own air supply so that the passengers and crew need not wear space suits. There are three decks in the orbiter, one above the other. At the top is the flight deck, from which the orbiter is controlled. Below this is a small galley, or kitchen, and sleeping quarters. The lowest deck contains equipment.
Crew members can go outside the orbiter to carry out various tasks.
When the orbiter re-enters the Earth's atmosphere, the resistance of the air brings its speed down sufficiently for it to make a safe landing on a special runway. Voyager The Voyager space probe programme was launched by the United States in 1977. Among the surprises sprung by Voyagers 1 and 2 was the existence of 'moons', or satellites, of Jupiter and Saturn that had not been seen before. Another was that Jupiter has a ring of gas round it . Voyager 2 also flew past Uranus and Neptune and is now travelling out of the solar system.