Video: Watch NASA's final shuttle mission

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updated 7/12/2011 7:24:09 PM ET 2011-07-12T23:24:09

The last spacewalk of NASA's space shuttle era went into the history books on Tuesday, after astronauts retrieved a broken pump from the International Space Station and installed a robotic refueling experiment.

The space station's two-armed robot Dextre won't try out the $22.6 million playset — a fancy Fisher-Price toy, as one astronaut describes it — until long after Atlantis departs and the shuttle program ends.

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But perhaps more than anything else on this final journey by a shuttle, the robotic demo illustrates the possibilities ahead for NASA: satellite-refueling stations in space, run by robots.

In a departure from previous shuttle visits, the spacewalking job fell to space station astronauts, Mike Fossum and Ron Garan, who teamed up for three spacewalks in 2008. The four-person Atlantis crew is the smallest in decades, and so the lone spacewalk of the mission was handed over to the full-time station residents.

It was the 160th spacewalk in the 12-year life of the orbiting outpost, and the last one planned for Americans for more than a year.

"To see that we've really done it, it's just awe-inspiring," Fossum said of the completed space station and all the spacewalks that went into it. "Ron and I are honored to be a part of it, to help close out one of the final chapters."

Variety of chores
Fossum and Garan completed the two major chores — the pump removal and robotic test hookup — inside of three and a half hours. They spent another three hours on a variety of small tasks.

The two paused during their spacewalk to admire the view 245 miles (395 kilometers) below — Kennedy Space Center — and on the next swing around the world, Houston, home to Mission Control.

"Hello Kennedy, beautiful launch," Fossum called out. Atlantis departed Kennedy on Friday on the very last shuttle launch.

The ammonia coolant pump stopped working last July and, for more than two weeks, left the space station with only half its cooling capability. Space station residents had to perform three emergency spacewalks last summer to replace the pump and restore full cooling to all the on-board equipment.

NASA wants the pump brought back to Earth so engineers can figure out why it failed to help them keep the on-board station pumps running. The space station is intended to operate until at least 2020.

Garan gripped the pump as the space station's robot arm maneuvered him over to Atlantis. The pump was anchored in the shuttle's payload bay, ready for next week's ride home. A small object ended up floating away, possibly a fabric strap from some insulation.

Emotional moments
As they turned their attention to the robotic experiment, the spacewalkers thanked all the thousands of people who worked on the shuttle. "It is really beautiful," Garan said.

Flight controllers choked up as Garan wrapped up work in the shuttle payload bay and noted that he was leaving it for the last time — the last time by anyone.

"We're technical people and we keep our heads in the game in real time," said Mission Control's Glenda Brown, the lead spacewalk officer, "but there wasn't any one of us who didn't have a little bit of a catch in our throat."

The robotic workbench — which the astronauts attached to a shelf on Dextre's base — consists of a 3-foot (1-meter) box holding four customized tools, including a wire cutter and a safety cap removal device, as well as an assortment of knobs, caps, valves and a half-gallon (2 liters) of ethanol.

Dextre — a hulking metal robot with 11-foot (3.4-meter) arms — will release locks on the tools in August but won't try out the workbench until January.

The designers of the experiment — based at Goddard Space Flight Center in Greenbelt, Md. — envision robots one day using these methods to fill the fuel tanks of satellites orbiting as high as 22,300 miles (35,700 kilometers). That would keep the spacecraft operating longer, instead of becoming expensive pieces of space junk. What's more, spacecraft bound for distant worlds could fill up after launch, thereby flying more payloads because of the savings in fuel weight.

Huge moving job
While the spacewalk unfolded, some of the eight astronauts inside worked to unload the nearly 5 tons of supplies that were delivered in a giant cargo carrier by Atlantis. It represents a year's worth of food, clothes and other housekeeping items, to tide the crew over in case commercial rocket makers fall behind in their own cargo runs. The first such haul is supposed to take place by year's end.

Until now, the shuttle has hoisted the bulk of supplies to the space station. Cargo runs by Russia, Japan and Europe will continue.

NASA is turning to private enterprise in the post-shuttle period, so it can meet the White House goal of sending astronauts to an asteroid by 2025 and Mars the decade after that.

The 13-day flight by Atlantis is the last for the 30-year shuttle program. Atlantis is due to return July 21 to Kennedy, where it will go on display at a tourist center.

© 2013 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

Photos: The final countdown: Shuttle Atlantis

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  1. Atlantis rising

    The space shuttle Atlantis makes its maiden voyage on Oct. 3, 1985, for the Defense Department's STS-51-J mission. At 176,413 pounds, Atlantis is nearly 3.5 tons lighter than Columbia, which was the heaviest shuttle. Atlantis is the lightest shuttle of the remaining fleet, weighing 3 pounds less than the shuttle Endeavour (with the three main engines). Atlantis is also the last space shuttle to be retired.

    Other statistics:
    Length: 122.17 feet
    Height: 56.58 feet
    Wingspan: 78.06 feet (Phil Sandlin / AP) Back to slideshow navigation
  2. First of its kind

    NASA's Magellan spacecraft is deployed from Atlantis' cargo bay in 1989 during the STS-30 mission. The Venus orbiter was the first interplanetary probe launched from a space shuttle. Later that year, Atlantis launched the Galileo probe to Jupiter. (NASA) Back to slideshow navigation
  3. Mission to Mir

    NASA and the Russian space agency kicked off a new era in international space cooperation during the STS-71 mission in June 1995, when Atlantis docked with Russia's Mir space station for the first time. This historic photo of the linked spacecraft was taken from a Russian Soyuz capsule during a fly-around. (NASA) Back to slideshow navigation
  4. Here's looking at you

    The space shuttle Atlantis begins the slow journey to Launch Pad 39A from the Vehicle Assembly Building at NASA's Kennedy Space Center in preparation for the launch of STS-79 in September 1996. This dramatic view, looking directly down onto the shuttle stack, was taken from the roof of the 525-foot-tall VAB. (NASA) Back to slideshow navigation
  5. Science in orbit

    Astronaut Shannon Lucid floats through the tunnel that connects Spacelab to Atlantis' cabin on Sept. 24, 1996. The Spacelab module rode in the shuttle's cargo bay and provided more space for scientific experiments. During this STS-79 mission, Atlantis linked up with Russia's Mir space station and brought Lucid back to Earth. (NASA) Back to slideshow navigation
  6. Lighting up the night

    Atlantis streaks into the early morning sky from NASA's Kennedy Space Center on May 15, 1997, as seen in this long-exposure photo taken from Veterans Memorial Park in Titusville, Fla. Atlantis' 10-day STS-84 mission featured a docking with Russia's Mir space station and a crew transfer. Atlantis docked with Mir seven times before the space station was deorbited in 2001. (Brian Cleary / AFP - Getty Images) Back to slideshow navigation
  7. Good as new

    The space shuttle Atlantis went back to its assembly plant in Palmdale, Calif., for 10 months of refurbishment and upgrades in 1997-1998. This aerial photo shows Atlantis taking a piggyback ride back to Kennedy Space Center in Florida atop a modified Boeing 747 jet on Sept. 1, 1998. (NASA) Back to slideshow navigation
  8. Checking it out

    Atlantis' upgraded cockpit gets a once-over in 1999 from engineers and executives, including Roy Bridges, Kennedy Space Center's director (seated at bottom left), as well as Laural Patrick, Joann Morgan and George Selina. The upgrades made Atlantis the most modern orbiter in the shuttle fleet, with a control system as advanced as those found on commercial jet airliners and military aircraft. (NASA) Back to slideshow navigation
  9. Tile tune-up

    Izeal Battle, a worker from United Space Alliance, repairs heat-shield tiles on the belly of the space shuttle Atlantis in the Orbiter Processing Facility at Kennedy Space Center on Jan. 30, 2004. (Matt Stroshane / Getty Images) Back to slideshow navigation
  10. Back in business

    Atlantis' astronauts leave their quarters at Kennedy Space Center and board the "Astrovan" for the ride out to Launch Pad 39B on Sept. 8, 2006, while gun-toting guards keep watch. A faulty fuel gauge grounded the shuttle for an extra day, but on Sept. 9 the shuttle lifted off on its STS-115 mission to the International Space Station. It marked Atlantis' first launch since 2002. (Jeff Haynes / AFP - Getty Images) Back to slideshow navigation
  11. Liftoff!

    The space shuttle Atlantis rises on a pillar of cloud from Launch Pad 39B at Kennedy Space Center on Sept. 9, 2006. Atlantis delivered structural components to the International Space Station during its STS-115 mission, resuming an orbital construction project that was stopped following the 2003 Columbia tragedy. (Matt Stroshane / Getty Images) Back to slideshow navigation
  12. Mission accomplished

    The clouds of Earth provide a backdrop for Atlantis shortly after its departure from the International Space Station on Sept. 17, 2006. (NASA) Back to slideshow navigation
  13. Night landing

    Atlantis lands amid darkness at Kennedy Space Center in Florida on Sept. 21, 2006, bringing the STS-115 space station construction mission to a successful close. (Chris O'Meara / AFP - Getty Images) Back to slideshow navigation
  14. Kicking the tires

    Atlantis crew members Chris Ferguson and Dan Burbank look over their spaceship after landing at Kennedy Space Center on Sept. 21, 2006. Ferguson was slated to be Atlantis' commander for NASA's final space shuttle mission. (Pierre Ducharme / AFP - Getty Images) Back to slideshow navigation
  15. Blaze of glory

    The space shuttle Atlantis' solid rocket boosters light up for launch on June 8, 2007, beginning a flight to the International Space Station. This STS-117 mission marked the 250th orbital human spaceflight. (Mark Wilson / Getty Images) Back to slideshow navigation
  16. Watching the ascent

    NASA mission managers monitor Atlantis' liftoff from Firing Room 4 at Kennedy Space Center in Florida on Nov. 16, 2009. During the STS-129 mission, Atlantis delivered a payload platform and vital supplies to the International Space Station. (Bill Ingalls / NASA) Back to slideshow navigation
  17. Shuttle skywriting

    Nearly an hour after launch, contrails from the shuttle Atlantis' liftoff float above the Vehicle Assembly Building at Kennedy Space Center in Florida on June 8, 2007. (Tim Sloan / AFP - Getty Images) Back to slideshow navigation
  18. Last visit to Hubble

    Spacewalkers Andrew Feustel and John Grunsfeld work on the Hubble Space Telescope on May 16, 2009, during Atlantis' STS-125 mission. This marked the final Hubble servicing mission. (NASA) Back to slideshow navigation
  19. Making a list

    Atlantis astronaut Mike Massimino writes notes on a checklist during the STS-125 Hubble servicing mission on May 18, 2009. During this mission, Massimino became the first astronaut to send a Twitter update from orbit: "Launch was awesome!!" (NASA) Back to slideshow navigation
  20. First Family meets Atlantis

    NASA astronaut Janet Kavandi leads President Barack Obama, First Lady Michelle Obama and their daughters Sasha and Malia beneath the shuttle Atlantis during a tour of the Orbiter Processing Facility at Kennedy Space Center on April 29, 2011. At the time, Atlantis was being prepared for its final flight. (Saul Loeb / AFP - Getty Images) Back to slideshow navigation
  21. Final flight

    Space shuttle Atlantis lifts off from Launch Pad 39A at NASA's Kennedy Space Center in Florida on July 8, 2011. The shuttle fleet's 135th and final mission, known as STS-135, brought supplies to the international space station. (John Raoux / AP) Back to slideshow navigation
  22. Witnessing history

    Spectators watch the liftoff of Atlantis on its final mission at NASA's Kennedy Space Center in Florida on July 8, 2011. (Shawn Thew / EPA) Back to slideshow navigation
  23. Last rendezvous

    The space shuttle Atlantis docks with the International Space Station for the last time on July 10, 2011. The shuttle delivered more than four tons of food, clothes and other supplies to keep the space station going in the post-shuttle era. NASA figures that this shipment will help keep the space station provisioned at least through the end of 2012. (NASA TV) Back to slideshow navigation
  24. Flight into history

    This poster pays tribute to the shuttle Atlantis' quarter-century of spaceflight: Graphic elements include the International Space Station and Russia's Mir space station, the Hubble Space Telescope (which Atlantis visited during the last servicing mission) and Venus and Jupiter (which were the destinations for probes launched from Atlantis). Threaded through the design are the mission patches for each of Atlantis' flights. A copy of this tribute poster hangs in Firing Room 4 of the Launch Control Center at NASA's Kennedy Space Center in Florida. (Amy Lombardo / NASA) Back to slideshow navigation
  25. An unprecedented view of the space shuttle Atlantis, appearing like a bean sprout against clouds and city lights, on its way home, as photographed by the Expedition 28 crew of the International Space Station on July 21, 2011. Airglow over Earth can be seen in the background. The Atlantis returned to Earth marking the end of the space shuttle era when its wheels touched down for the last time at the Kennedy Space Centre. 'After serving the world for over 30 years, the space shuttle has earned its place in history. It's come to a final stop,' Atlantis commander Chris Ferguson replied. (Nasa / Handout / EPA) Back to slideshow navigation
  26. Johnson Space Center employees Shelley Stortz, left, and Jeremy Rea, right, hold hands as they watch space shuttle Atlantis land on July 21, 2011, in Houston. (David J. Phillip / AP) Back to slideshow navigation
  27. Space shuttle Atlantis lands at the Kennedy Space Center in Cape Canaveral, Florida, on July 21, 2011. The Atlantis glided home through a moonlit sky for its final landing at the Kennedy Space Center in Florida, completing a 30-year odyssey for NASA's shuttle fleet. (Pierre Ducharme / Reuters) Back to slideshow navigation
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  1. Phil Sandlin / AP
    Above: Slideshow (27) Final countdown for Atlantis
  2. Adam Zyglis / Buffalo News, PoliticalCartoons.com
    Slideshow (13) Shuttle era draws to a close
  3. Image:
    Y. Beletsky / ESO
    Slideshow (12) Month in Space: January 2014

Interactive: Final shuttle mission in focus

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