Editing Space Shuttle (section)

====Spacelab====
{{main|Spacelab}}
[[File:STS-9 Spacelab 1.jpg|thumb|alt=Spacelab in the payload bay while in orbit|[[Spacelab]] in orbit on [[STS-9]]]]

The Spacelab module was a European-funded pressurized laboratory that was carried within the payload bay and allowed for scientific research while in orbit. The Spacelab module contained two {{convert|9|ft|m|sigfig=2|abbr=on|order=flip}} segments that were mounted in the aft end of the payload bay to maintain the center of gravity during flight. Astronauts entered the Spacelab module through a {{convert|8.72|or|18.88|ft|m|sigfig=2|abbr=on|order=flip}} tunnel that connected to the airlock. The Spacelab equipment was primarily stored in pallets, which provided storage for both experiments as well as computer and power equipment.<ref name=jenkins />{{rp|434–435}} Spacelab hardware was flown on 28 missions through 1999 and studied subjects including astronomy, microgravity, radar, and life sciences. Spacelab hardware also supported missions such as Hubble Space Telescope (HST) servicing and space station resupply. The Spacelab module was tested on STS-2 and STS-3, and the first full mission was on STS-9.<ref name=NASA28>{{cite web |url=https://science.nasa.gov/science-news/science-at-nasa/1999/msad15mar99_1/ |title=Spacelab joined diverse scientists and disciplines on 28 Shuttle missions |last=Dooling |first=Dave |publisher=NASA |date=March 15, 1999 |access-date=April 23, 2020 |archive-date=December 24, 2018 |archive-url=https://web.archive.org/web/20181224003720/https://science.nasa.gov/science-news/science-at-nasa/1999/msad15mar99_1/ |url-status=live}}</ref>