Astronauts Move Space Station's Vital Connecting Node

The Harmony connecting node and PMA-2 shuttle docking port.
The Italian-built Harmony connecting node and its PMA-2 shuttle docking port hang off the end of the International Space Station's robotic arm during a Nov. 14, 2007 move by the Expedition 16 crew (Image credit: NASA)

This story was updated at 12:54 p.m. EST.

Astronautsaboard the International Space Station (ISS) moved their orbital laboratory's latestaddition to a new perch Wednesday as engineers on Earth studied a spacesuitglitch that may impact the crew's spacewalk plans.

Wielding a58-foot (18-meter) robotic arm, Expedition 16 commanderPeggy Whitson and flight engineer Dan Tani relocated the nearly 16-tonHarmony connecting node - a school bus-sized module that will anchor futureinternational laboratories to the ISS - to the forward end of the station?s U.S.Destiny lab.

?Harmony has found its Destiny, its new home at the forwardend of the International Space Station,? said NASA commentator John IraPetty as astronauts attached the hub-like node into place.

The Italian-built Harmony node is equipped with six dockingports in all, two of which provide connections between the ISS and NASA spaceshuttles. Four other berths will be used to connect European and Japaneselaboratories, as well as other modules, to the ISS. The European Space Agency?s Columbus lab, set to launch Dec. 6 aboard NASA?s shuttle Atlantis, will bethe first to arrive at Harmony next month.

?It addsprimarily the capability to add additional modules,? Tani said of Harmony in aNASA interview. ?We talk about the space station sort of like a Tinker toy, andthis is one of those connector modules that has lots of holes in it that youcan add additional modules to.?

The module?ssuccessful Wednesday move sets the stage for a pairof spacewalks next week to route power and cooling lines to Harmony, thoughthe planned Nov. 20 and Nov. 24 excursions must wait until NASA engineers clearthe space station?s U.S. spacesuits for orbital work.

NASA haltedall U.S. spacewalk plans earlier this week after an astronautsmelled smoke inside a U.S. spacesuit - known as an Extravehicular MobilityUnit - during a Friday ground test at the agency?s Johnson Space Center in Houston, Texas.

Engineersdid not find any evidence of combustion or damage in the test spacesuit, NASAspokesperson Brandi Dean told late Tuesday. They will presenttheir findings to a mishap investigation team later today, she added.

NASA couldclear the space station?s U.S. spacesuits for use as early as today orThursday, well ahead of next week?s planned spacewalks, space agency officialssaid.

Harmony?sswift move

Harmony?srelocation today began at 4:21 a.m. EST (0921 GMT) as Whitson commanded aseries of bolts to retract, loosening the module?s grasp on the port side ofthe space station?s Unity node. Six minutes later, Tani plucked the massivenode and its 1.5-ton shuttle docking port free from the ISS.

?This, Ithink, officially ends all of my planned robotics operations for my missionhere,? said Tani, who is set to return to Earth nextmonth aboard Atlantis. ?I have really enjoyed running the arm and hopefully Ididn?t scare too many people down there.?

?It all lookedbeautiful from the ground,? NASA astronaut Kevin Ford replied from Mission Control.

Whitson andTani completed the move about two hours ahead of schedule as they and Russiancrewmate Yuri Malenchenko continue with a busy month of ISS construction work toready the space station for December?s planned shuttle mission. They opened the hatches between Harmony and the ISS at about 11:52 a.m. EST (1652 GMT).

Expedition16 astronauts primed Harmony for its move during a Nov. 9 spacewalk, thenequipped the module with its shuttle docking port early Monday. Harmony,itself, arrived at the ISS on Oct. 26 during NASA?s STS-120shuttle mission.

As Tanihoisted Harmony to its U.S. Destiny lab berth, cameras mounted to the spacestation?s exterior returned stunning views of the connecting module backlit bya bright blue Earth.

?It is amazing,? Whitson said. ?I love my job.?

NASAwill broadcast the Expedition 16 crew?s second spacewalk outside the ISS liveon NASA TV on Nov. 20 beginning at 5:00 a.m. EST (1000 GMT). Click here for ISS missionupdates and NASA TV feed.

  • VIDEO: ISS Commander Peggy Whitson Takes Charge
  • NEW IMAGES: Discovery?s STS-120 Mission in Pictures
  • VIDEO Interplayer: STS-120 Mission Brings 'Harmony' to ISS


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Tariq Malik

Tariq is the Editor-in-Chief of and joined the team in 2001, first as an intern and staff writer, and later as an editor. He covers human spaceflight, exploration and space science, as well as skywatching and entertainment. He became's Managing Editor in 2009 and Editor-in-Chief in 2019. Before joining, Tariq was a staff reporter for The Los Angeles Times covering education and city beats in La Habra, Fullerton and Huntington Beach. In October 2022, Tariq received the Harry Kolcum Award for excellence in space reporting from the National Space Club Florida Committee. He is also an Eagle Scout (yes, he has the Space Exploration merit badge) and went to Space Camp four times as a kid and a fifth time as an adult. He has journalism degrees from the University of Southern California and New York University. You can find Tariq at and as the co-host to the This Week In Space podcast with space historian Rod Pyle on the TWiT network. To see his latest project, you can follow Tariq on Twitter @tariqjmalik.