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About the Space Station
(as of June 2007):
482,345 pounds
Pressurized Volume
Almost 14,000 cubic feet
Span of Solar Arrays:
256 feet
146 feet from Destiny Lab PMA 2 to Zvezda;
170 feet with a Progress docked
Truss P4 to S4: 231 feet
Height with no Progress on DC1: 98 feet
Height with Progress on DC1: 107 feet

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Meet the Expedition 16 crewSee the ISS in the Night Sky

Since 1961, more than 400 human beings have ventured into space. Now aboard the International Space Station, astronauts are working to improve life on Earth and extend life beyond our home planet.
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Crew Completes Progress Undocking Preparations

ISS025-E-007363 -- Expedition 25 Flight Engineer Scott Kelly Image above: Expedition 25 Flight Engineer Scott Kelly is pictured in the International Space Station's cupola. Credit: NASA

Expedition 25 Flight Engineer Fyodor Yurchikhin closed and performed leak checks on the hatch between the International Space Station and the ISS Progress 37 cargo ship Friday, completing preparations for the craft’s undocking.

The Progress is scheduled to undock from the Pirs docking compartment Monday at 10:25 a.m. EDT. It will spend three weeks orbiting a safe distance from the station to enable Russian engineers to conduct technology experiments before being deorbited Nov. 15.

The undocking of Progress 37 sets the stage for the launch of the new ISS Progress 40 cargo ship on Wednesday from the Baikonur Cosmodrome in Kazakhstan. The new Progress is loaded with 1,918 pounds of propellant, 1,100 pounds of oxygen, 498 pounds of water and 2,804 pounds of food, spare parts and supplies for the Expedition 25 crew. It will dock to the station’s Pirs docking compartment Oct. 30.

A new technology demonstration produced the first quart, or liter, of water for the station’s water recycling system overnight. The Sabatier system uses a technology developed by 1912 Nobel Prize winner Paul Sabatier to extract water from the byproducts of the station’s Oxygen Generation System and Carbon Dioxide Removal Assembly. The system can produce up to 530 gallons (2,000 liters) of water each year. The system was integrated into the Water Recovery System on the space station last week and checkout was completed this week. The Sabatier process involves using a nickel catalyst to interact with hydrogen and carbon dioxide at elevated temperatures and pressures to produce water and methane. The water is retained for recycling processes, and the methane is vented overboard. The demonstration is a joint effort of NASA and Hamilton Sundstrand.

Flight Engineer Shannon Walker continued her work with the Japanese experiment HydroTropi. The botanical experiment takes place in the Kibo laboratory and studies how plants, such as a cucumber, grow at a molecular level in microgravity. Data obtained from the results may lead to significant advancements in agricultural production on Earth.

Commander Doug Wheelock performed a periodic fitness evaluation on Flight Engineer Scott Kelly.

Wheelock also deactivated the Atmosphere Revitalization rack in the Tranquility module to work with the low-temperature loop quick disconnects there. He also worked with the Harness Development Test Objective, which is evaluating harnesses for use with the COLBERT treadmill. The harness applies pressure that causes a crew member’s footfalls to mimic Earth gravity as closely as possible, as a countermeasure against bone density loss and muscle degradation in microgravity.

Flight Engineers Alexander Kaleri and Oleg Skripochka configured audio on the orbital complex’s communication systems.

As the newest inhabitants of the orbital complex, Kaleri, Skripochka and Kelly spent time orienting themselves to their surroundings.

Space shuttle Discovery will launch Nov. 1 to begin the STS-133 mission the space station. On the orbiter’s final spaceflight, the crew members will install the Permanent Multipurpose Module and deliver important spare parts to the station along with the Express Logistics Carrier-4 and Robonaut 2.

› Doug Wheelock shares thoughts on the Chilean miners’ rescue
› View a gallery of Expedition 25 images
› View a photo Wheelock posted to his Twitter account of the Soyuz that will bring him, Walker and Yurchikhin home at the end of November.

› ISS MCB Sept. 21, 2010 Meeting News Release
› Read more about Expedition 25
› View crew timelines
› Read about the 2010 International Space Station calendar

International Space Station Features

  • New Crew Members Welcomed Aboard Station

    New Crew Members Welcomed Aboard Station

    After a two-day journey three new Expedition 25 crew members arrived at the International Space Station and docked to the Poisk module Saturday, Oct. 9 at 8:01 p.m. EDT.

  • The Soyuz TMA-01M rocket launches

    Three New Station Crew Members Launch from Kazakhstan

    NASA astronaut Scott Kelly and Russian cosmonauts Oleg Skripochka and Alexander Kaleri launched in their Soyuz TMA-01M spacecraft beginning a two-day journey to the International Space Station.

  • 201009250002HQ -- Tracy Caldwell Dyson, left, Commander Alexander Skvortsov, center and Mikhail Kornienko

    Expedition 24 Crew Lands in Kazakhstan

    Expedition 24 Commander Alexander Skvortsov and Flight Engineers Tracy Caldwell Dyson and Mikhail Kornienko landed their Soyuz TMA-18 spacecraft in Kazakhstan on Saturday, Sept. 25, wrapping up a six-month stay aboard the International Space Station.

  • ISS Progress 39 cargo craft

    New Russian Resupply Vehicle Docks to Station

    The 39th ISS Progress resupply vehicle automatically docked to the aft port of the Zvezda service module of the International Space Station at 7:58 a.m. EDT Sept. 12 using the Kurs automated rendezvous system.

  • The ISS Progress 39 cargo craft launches

    Progress Resupply Ship Launches to Station

    The ISS Progress 39 cargo craft launched from the Baikonur Cosmodrome in Kazakhstan at 6:22 a.m. EDT Sept. 10.

  • NASA Opens Space Station for Biological Research from NIH Grants

    NASA Opens Space Station for Biological Research from NIH Grants

    NASA is enabling biomedical research with National Institutes of Health grants that take advantage of the unique microgravity environment aboard the International Space Station to explore fundamental questions about important health issues.

Interactive Features

Astronaut on spacewalk
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International Space Station
Assembly Sequence Imagery
Exterior photos show the Station's growth as new components are added.
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What are the ISS Attitudes?
See how the International Space Station orients itself.
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Editor: Amiko Kauderer
NASA Official: Brian Dunbar
Last Updated: October 23, 2010
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