Editing Mobile Servicing System (section)

{{short description|Robotic system on board the International Space Station}}
[[File:STS-114 Steve Robinson on Canadarm2.jpg|thumb|right|300px|Astronaut [[Stephen K. Robinson]] anchored to the end of the Canadarm2 during [[STS-114]], 2005]]
[[File:Rassvet Canadarm Crop.jpg|thumb|Canadarm2 moves [[Rassvet (ISS module)|Rassvet]] to berth with the station on [[STS-132]], 2010]]

The '''Mobile Servicing System''' ('''MSS''') is a [[robot]]ic system on board the [[International Space Station]] (ISS). Launched to the ISS in 2001, it plays a key role in station assembly and maintenance; it moves equipment and supplies around the station, supports astronauts working in space, services instruments and other payloads attached to the ISS, and is used for external maintenance. Astronauts receive specialized training to perform these functions with the various systems of the MSS.

The MSS is composed of three components:

* the Space Station Remote Manipulator System (SSRMS), known as '''Canadarm2'''.
* the Mobile Remote Servicer Base System (MBS).
* the [[Dextre|Special Purpose Dexterous Manipulator]] (SPDM, also known as '''"Dextre"''' or '''"Canada hand"''').

The system can move along rails on the [[Integrated Truss Structure]] on top of the US-provided Mobile Transporter cart, which hosts the MRS Base System. The system's control software was written in the [[Ada (programming language)|Ada 95 programming language]].<ref>{{cite web | url = http://www.adacore.com/uploads/customers/CaseStudy_SpaceArm.pdf| title = Case Study: MDA - Canadian Space Arm | publisher = AdaCore | access-date=2009-10-15}}</ref>

The MSS was designed and manufactured by [[MDA (company)|MDA]] (previously divisions of MacDonald Dettwiler Associates called [[MDA Space Missions]], MD Robotics, and previously called SPAR Aerospace) for the [[Canadian Space Agency]]'s contribution to the International Space Station.