Pair of NASA Astronauts Wrap Up Second Spacewalk

Astronauts Scott Kelly and Kjell Lindgren
Astronauts Scott Kelly and Kjell Lindgren
Astronauts Scott Kelly and Kjell Lindgren translate along the port truss structure back to the Quest airlock after completing cooling system servicing work. Credit: NASA TV

NASA astronauts Scott Kelly and Kjell Lindgren ended their spacewalk at 2:10 p.m. EST with the repressurization of the U.S. Quest airlock. The astronauts restored the port truss (P6) ammonia cooling system to its original configuration, the main task for today’s spacewalk. They also returned ammonia to the desired levels in both the prime and back-up systems.

In a minor departure from the planned tasks, the astronauts ran out of time to cinch and cover a spare radiator known as the Trailing Thermal Control Radiator. The radiator, which Lindgren retracted earlier in the spacewalk, was fully redeployed and locked into place in a dormant state.

The radiator had been deployed during a November 2012 spacewalk by astronauts Sunita Williams and Aki Hoshide as they tried to isolate a leak in the truss’ cooling supply by re-plumbing the system to the backup radiator. The leak persisted and was subsequently traced to a different component that was replaced during a spacewalk in May 2013.

The 7 hour and 48 minute spacewalk was the second for both astronauts, and the 190th in support of assembly and maintenance of the orbiting laboratory. Crew members have now spent a total of 1,192 hours and 4 minutes working outside the orbital laboratory.

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14 thoughts on “Pair of NASA Astronauts Wrap Up Second Spacewalk”

  1. I saw this on Nasa tv.
    How nice! Congratulations
    for space walk success.
    Pioneer sprit is treasure and pride for us mankind.i am so glad for this bright news! Very thanks.Please take a rest. 

  2. I am glad ISS has really become INTERNATIONAL lately. Especially I think it is so important to launch Japan with their modern Japanese Technologies!
    Step by step it is important to improve conditions of long staying people at ISS with paying special attention to the safety and comforts. With this aim it is necessary to prepare a list of proposals on part of the Astronauts describing the desiring.
    I think it is the first question to settle.
    Next I will advise in the future message.
    With kind regards,
    Iurii Riabokon

  3. I watched and listened as much as I could during today’s space walk, just as they were going to come from pressurization my iPad froze up. But it was very exciting to watch, I love to see the earth from way up there while they are outside the station.
    We often go out side and look up when they are going overhead in the evening.
    Be safe.

  4. J’ai 74 ans, attiré par l’espace depuis l’âge de 10 ans, je remercie la NASA et tous ses membres pour ces merveilleuses images, et émissions par lesquelles mes rêves d’enfant se sont concrétisés. Merci…

  5. Thank you for all your hard work, in the vacuum of space no less! And thank you for sharing it with us civilians. Rest up.

    Whitney Cunningham

  6. Bonjour à vous.Quel exploit de vous savoir là-haut.Vous êtes formidables. Je peux vous dire qu’à chaque fois que vous passez sur la France , je ne peux pas m’empêcher de sortir pour voir passer la station, soit à l’oeil nu où aux jumelles.J’ai bien tenté au télescope , mais c’est impossible à suivre.Bravo à tous et bon vent si je puis dire ; mais je sais bien que là haut il n’y en a pas. Vous êtes FORMIDABLES

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