Editing Harmony (ISS module) (section)

== Connecting modules and visiting vehicles ==
[[File:Harmony node in Space Shuttle Discovery's payload bay.jpg|thumb|upright=1.3|right|''Harmony'' inside the payload bay of [[Space Shuttle Discovery|Space Shuttle ''Discovery'']] while on its way to the ISS.]]

''Harmony'' was the first permanent living space enlargement to the ISS after the [[Pirs (ISS module)|''Pirs'' docking compartment]] was added in 2001. The [[Expedition 16]] crew moved the [[Pressurized Mating Adapter]] (PMA-2) on 12 November 2007 from ''Destiny'' to the forward berth of ''Harmony''. The combined PMA-2/''Harmony'' unit was subsequently berthed to its final destination at the forward end of ''Destiny'' on 14 November 2007.<ref name="pma3"/> All the following Space Shuttle missions would dock at this location.

On 11 February 2008, ESA's ''[[Columbus (ISS module)|Columbus]]'' laboratory was attached to the starboard hatch of the ''Harmony'' module during space shuttle mission [[STS-122]]. On 14 March 2008, the Experiment Logistics Module Pressurized Section (ELM-PS) of [[Kibō (ISS module)|Kibō]] was attached to its interim location: the [[zenith]] hatch of ''Harmony''. During [[STS-124]], a Space Shuttle mission flown by [[Space Shuttle Discovery|Space Shuttle ''Discovery'']], the Pressurized Module of Kibō was added to the port side of ''Harmony'' and the ELM-PS was moved, leaving the zenith hatch empty. The zenith hatch was originally intended to be the permanent docking connector for the now canceled [[Centrifuge Accommodations Module]] (CAM).

When the Space Shuttle flew the [[Multi-Purpose Logistics Module]]s (MPLMs) to the station, the MPLM would be temporarily berthed to the [[nadir]] mechanism of ''Harmony''.<ref name="src">{{cite web|url=http://www.spaceref.com/iss/elements/node2.html|title=Space Station User's Guide: ISS Elements: Node 2|access-date=September 28, 2007|publisher=SpaceRef.com|year=2007|archive-date=16 December 2012|archive-url=https://archive.today/20121216130522/http://www.spaceref.com/iss/elements/node2.html|url-status=dead}}</ref> The Japanese [[H-II Transfer Vehicle]] and the American [[Commercial Orbital Transportation Services|Commercial Resupply Service]] (COTS) vehicles, [[SpaceX Dragon|Dragon]] and [[Cygnus (spacecraft)|Cygnus]], are temporarily berthed to either the nadir or zenith mechanism.

In August 2016, the forward docking port was equipped with the [[International Docking Adapter]] (IDA) delivered with the [[SpaceX CRS-9|CRS-9]] mission. This adapter was used for the first time for the automatic docking of the [[SpaceX Dragon 2|Crew Dragon]] spacecraft during its [[Crew Dragon Demo-1|uncrewed test mission]] on 3 March 2019.<ref>{{cite web|title=NASA, SpaceX Launch First Flight Test of Space System Designed for Crew|url=https://www.nasa.gov/press-release/nasa-spacex-launch-first-flight-test-of-space-system-designed-for-crew|website=nasa.gov|date=2 March 2019 |publisher=NASA|access-date=2 March 2019}} {{PD-notice}}</ref>

<gallery class="center" widths="200" heights="400">
File:STS-132 Atlantis at ISS 1.jpg|Space Shuttle docked to PMA-2
File:MPLM berthed to Node 2.jpg|MPLM berthed to Node 2 nadir
File:HTV-3 berthed to Harmony nadir.jpg|HTV being berthed to Node 2 nadir
File:COTS2 Dragon is berthed.jpg|Dragon being berthed to Node 2 nadir
File:Orb CRS-1 unberthing - crop.jpg|Cygnus being unberthed from Node 2 nadir
File:Canadarm2 moving Harmony node into position.jpg|[[Mobile Servicing System|Canadarm2]] moving the ''Harmony'' module into position on the ISS
File:Both commercial Crew vehicles Crew Dragon and Starliner docked to ports on harmony module at the same time.png|Both Commercial Crew vehicles Crew Dragon and Starliner docked to zenith and forward ports on harmony module at the same time
File:Commercial Crew Program vehicles.jpg|Commercial Crew Program vehicles Starliner and Dragon
</gallery>

On 26 March 2017, PMA-3 was robotically removed from the ''Tranquility'' module and attached to the zenith port of the ''Harmony'' module after being prepared during a successful spacewalk on 24 March 2017. A second spacewalk was conducted on 30 March 2017 to finalize the PMA-3 cable connections on ''Harmony''. PMA-3 is linked to the [[International Docking Adapter]]-3 adapter, delivered on the [[SpaceX CRS-18]] mission in July 2019.<ref>{{cite web|title=CRS-18 Dragon arrives at the ISS following Falcon 9 launch|url=https://www.nasaspaceflight.com/2019/07/falcon-9-launch-dragon-third-crs-18/|first=Chris|last=Gebhardt |date=July 27, 2019|access-date=June 9, 2020}}</ref> IDA-3 was fully linked to PMA-3 during an EVA on 21 August 2019.<ref>{{cite web|title=EVA-55 installs second IDA to allow for additional commercial crew vehicle options|url=https://www.nasaspaceflight.com/2019/08/eva-55-ida-additional-commercial-crew-options/|first1=Chris|last1=Bergin|first2=Pete|last2=Harding|publisher=NASASpaceFlight.com|date=August 21, 2019 |access-date=June 9, 2020}}</ref>