Spacelab was a reusable laboratory used on certain spaceflights flown by the Space Shuttle. The laboratory comprised multiple components, including a pressurized module, an unpressurized carrier and other related hardware housed in the Shuttle's cargo bay. The components were arranged in various configurations to meet the needs of each spaceflight.
Spacelab components flew on 22 Shuttle missions between November 1983 and April 1998. Spacelab allowed scientists to perform experiments in microgravity in Earth orbit.
The primary payload was Spacelab-3. This was the first operational flight for the Spacelab orbital laboratory series developed by the European Space Agency. Spacelab includes five basic discipline areas: materials sciences, life sciences, fluid mechanics, atmospheric physics, and astronomy. The main mission objective with Spacelab-3 was to provide a high quality microgravity environment for delicate materials processing and fluid experiments. Two monkeys and 24 rodents were observed for the effects of weightlessness. Of the 15 Spacelab primary experiments conducted, 14 were considered successful. Two Get Away Specials were on board.
