Editing Unity (ISS module) (section)

{{italic title}}
{{Short description|American module of the International Space Station}}
{{Use American English|date=August 2020}}
{{Use dmy dates|date=August 2020}}
{{Infobox space station module
| spelling               = us
| module                 = ''Unity''
| module_image           = ISS Unity module (cropped).jpg
| module_image_caption   = ''Unity'' as pictured by {{OV|105}} shortly after it was berthed to [[Zarya (ISS module)|''Zarya'']] in December&nbsp;1998
| station                = [[International Space Station]]
| launch                 = 4 December 1998, 08:35:34{{nbsp}}[[Coordinated Universal Time|UTC]]
| launch_vehicle         = {{OV|105}}
| berthed                = 6 December 1998 ([[Zarya (ISS module)|''Zarya'']]&nbsp;forward)
| mass                   = {{cvt|11612|kg}}
| length                 = {{cvt|5.47|m}}
| width                  = 
| height                 = 
| diameter               = {{cvt|4.57|m}}
| volume                 = 
| stats_ref              = 
| configuration_image    = 
| configuration_size     = 
| configuration_caption  = 
}}

'''''Unity''''', also known as '''Node 1''', is the first [[United States|U.S.]]-built component of the [[International Space Station]] (ISS). This cylindrical module, constructed of steel by [[Boeing]] for [[NASA]], serves as the critical link between the orbiting laboratory's [[Russian Orbital Segment]] and [[US Orbital Segment]].

''Unity'' was launched on 4 December 1998, aboard the {{OV|105}} on [[STS-88]]. Two days later it was berthed to the previously launched [[Zarya (ISS module)|''Zarya'' module]], marking the first connection between ISS components. Its six [[Common Berthing Mechanism]] (CBM) locations ([[Glossary of nautical terms (A–L)|forward]], [[aft]], [[Port and starboard|port]], [[Port and starboard|starboard]], [[zenith]], and [[nadir]]) facilitate connections to other modules. At launch, two CBM locations were fitted with [[Pressurized Mating Adapter]]s (PMA), one of which enabled the mating with ''Zarya''.

Measuring {{convert|4.57|m}} in diameter and {{convert|5.47|m}} in length, ''Unity'' was built at NASA's [[Marshall Space Flight Center]]. It is the first of three connecting modules, joined by [[Harmony (ISS module)|''Harmony'']] and [[Tranquility (ISS module)|''Tranquility'']].