Editing Unity (ISS module) (section)

== Other nodes ==
[[File:Node 3 - Isolated view.jpg|thumb|upright=1.0|Node 3 (''Tranquility'') in space]]

The two remaining station connecting modules, or nodes, were manufactured in [[Italy]] by [[Alenia Aerospazio]], as part of an agreement between [[NASA]] and the [[European Space Agency]] (ESA). ''[[Harmony (ISS module)|Harmony]]'' (also known as Node 2) and ''[[Tranquility (ISS module)|Tranquility]]'' (also known as Node 3) are slightly longer than ''Unity'', measuring almost {{cvt|6.4|m}} long in total. In addition to their six berthing ports, each can hold eight [[International_Standard_Payload_Rack|International Standard Payload Racks]] (ISPRs). Unity, in comparison, holds just four ISPRs. ESA built Nodes 2 and 3 as partial payment for the launch aboard the Shuttle of the ''[[Columbus (ISS module)|Columbus]]'' laboratory module, and other ESA equipment.