Editing Service module (section)

== Operating service modules ==

=== Zvezda (ISS module) ===
{{Main|Zvezda (ISS module)}}
The ''Zvezda Service Module'', is a module of the [[International Space Station]] (ISS). It was the third module launched to the station, and provides all of the station's [[life support system]]s, some of which are supplemented in the [[US Orbital Segment]] (USOS), as well as living quarters for two crew members. It is the structural and functional center of the [[Russian Orbital Segment]] (ROS), which is the [[Russia]]n part of the ISS. Crew assemble here to deal with emergencies on the station.<ref>{{cite AV media|people=Williams, Sunita (presenter)|date=3 July 2015|title=Departing Space Station Commander Provides Tour of Orbital Laboratory|medium=video|url=https://www.youtube.com/watch?v=doN4t5NKW-k|access-date=1 September 2019|time=17.46-18.26|publisher=NASA}} {{PD-notice}}</ref><ref>{{cite web|url=https://www.baltimoresun.com/news/bs-xpm-2000-11-11-0011110386-story.html|title=Space station astronauts take shelter from solar radiation|last=Roylance|first=Frank D.|date=11 November 2000|newspaper=The Baltimore Sun|access-date=1 September 2019}}</ref><ref>{{cite web |url=https://www.nasa.gov/vision/universe/solarsystem/10.28Flare.html|title=Tuesday/Wednesday Solar Punch|last=Stofer|first=Kathryn|date=29 October 2013|publisher=NASA|access-date=1 September 2019}} {{PD-notice}}</ref> ''Zvezda'' was launched on a [[Proton (rocket family)|Proton]] launch vehicle on 12 July 2000, and docked with the ''[[Zarya (ISS module)|Zarya]]'' module on 26 July 2000.

=== Soyuz service module ===
{{Main|Soyuz (spacecraft)}}
At the back of the Soyuz spacecraft is the Service Module. It has a pressurized container shaped like a bulging can (instrumentation compartment, priborniy otsek) that contains systems for temperature control, electric power supply, long-range radio communications, radio telemetry, and instruments for orientation and control. A non-pressurized part of the Service Module (propulsion compartment, agregatniy otsek) contains the main engine and a liquid-fuelled propulsion system for maneuvering in orbit and initiating the descent back to Earth. Outside the Service Module are the sensors for the orientation system and the solar array, which is oriented towards the Sun by rotating the ship.

=== Shenzhou service module ===
{{Main|Shenzhou (spacecraft)}}
The aft service module of the Shenzhou spacecraft contains life support and other equipment required for the functioning of Shenzhou. Two pairs of solar panels, one pair on the service module and the other pair on the orbital module, have a total area of over 40 m2 (430 ft<sup>2</sup>), indicating average electrical power over 1.5 kW.

=== European Service Module (Orion) ===
{{Main|European Service Module}}
The European Service Module is the service module component of the [[Orion (spacecraft)|Orion spacecraft]], serving as its primary power and propulsion component until it is discarded at the end of each mission. The service module supports the crew module from launch through separation prior to reentry. It provides in-space propulsion capability for orbital transfer, [[Spacecraft attitude control|attitude control]], and high altitude ascent aborts. It provides the water and oxygen needed for a habitable environment, generates and stores electrical power, and maintains the temperature of the vehicle's systems and components. This module can also transport unpressurized cargo and scientific payloads.<ref name=":0">{{cite web |title=Explore the Exploration Vehicle |url=https://www.nasa.gov/exploration/systems/mpcv/explore.html |publisher=NASA |access-date=6 February 2021 |language=en |date=6 June 2013}} {{PD-notice}}</ref>