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STS-126: The programs

In advance of shuttle Endeavour's STS-126 mission to the station, managers from both programs discuss the flight.

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STS-126: The mission

A detailed preview of Endeavour's mission to deliver expanded crew accommodations to the station is provided in this briefing.

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STS-126: Spacewalks

Four spacewalks are planned during Endeavour's STS-126 mission to the station.

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STS-126: The Crew

The Endeavour astronauts, led by commander Chris Ferguson, meet the press in the traditional pre-flight news conference.

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Shuttle rollaround

Space shuttle Endeavour switched launch pads on Oct. 23, traveling from pad 39B to pad 39A.

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Two shuttles sighted

Stunning aerial views of shuttles Atlantis and Endeavour perched atop launch pads 39A and 39B on Sept. 20.

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Endeavour to the VAB

For its role as a rescue craft during the Hubble servicing mission and the scheduled November logistics run to the space station, Endeavour is moved to the Vehicle Assembly Building.

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Spacewalker expresses remorse for lost tool bag
BY WILLIAM HARWOOD
STORY WRITTEN FOR CBS NEWS "SPACE PLACE" & USED WITH PERMISSION
Posted: November 19, 2008

Astronaut Heidemarie Stefanyshyn-Piper told reporters today the loss of a $100,000 tool bag during an otherwise successful spacewalk Tuesday was "disheartening" and that it was difficult to face her crewmates when she returned to the shuttle-space station complex. Fellow spacewalker Stephen Bowen, who said he was responsible for making a final tether check of the bag before the EVA began, said he was equally to blame for the mishap.

"During the spacewalk, during that time it was easy to put it aside because I know that, you know, we still had five hours of spacewalk work to do and the work needed to get done and you can't dwell on a mistake," Stefanyshyn-Piper told The Associated Press in a brief interview today. "It was hardest when I got back in and having to face everybody else. That's when the hardest part of it, you know, knowing that I'd made a mistake.

"But we still have three more spacewalks to go and we still have a lot of work to do," she said. "You have to learn from your mistakes, we're definitely not going to do it again, you're not going to see us lose another bag, we're going to double and triple check everything from here on out."

Stefanyshyn-Piper and Robert "Shane" Kimbrough are scheduled for a second spacewalk Thursday to service the station's robot arm and to continue cleaning and lubricating the lab's damaged right-side solar array rotary mechanism.

Preparing to begin that work Tuesday, Stefanyshyin-Piper carried a tool kit containing two grease guns, wet and dry wipes, a scraper tool and a large trash bag inside a larger soft-sided equipment bag. When she got to the worksite, she discovered one or both grease guns had discharged a considerable amount of grease inside the bag. While struggling to clean up the mess, the smaller tool bag, containing the grease guns and other equipment, floated away.

Asked how much the tool kit cost, Stefanyshyn-Piper said "I probably don't want to know at this point." NASA officials said later the bag and the custom-built tools inside cost roughly $100,000.

Stefanyshyn-Piper and Stephen Bowen completed the first spacewalk sharing the two remaining grease guns, completing all of their objectives. Since then, flight controllers have been studying options for working around the loss of two grease guns during three more spacewalks Thursday, Saturday and next Monday.

Going into the flight, the plan was to use grease-impregnated wipes to dab up loose debris on the rotary joint's 10-foot-wide drive gear. Then, after laying down a bead of grease with a grease gun, the spacewalkers, working on opposite sides of the joint, would use a scraper to chip off debris that had been crushed onto the bearing race by the rollers that hold the big gear in place. Then, after using dry wipes to clean up any remaining debris, additional lubrication would be applied to reduce rolling friction in the mechanism.

During the first spacewalk, the astronauts used up about a quarter of a cartridge in each of the two remaining grease guns. Flight director Ginger Kerrick said today the crew still has six full cartridges of Braycote vacuum grease available, which should be more than enough to complete the servicing.

During Thursday's spacewalk, Stefanyshyn-Piper will use the grease-impregnated wipes to collect and contain debris in the rotary joint while Kimbrough uses a grease gun to lubricated capture snares on the station's robot arm. Then, working together, they'll share the tools again. But this time around, Stefanyshyn-Piper will attempt to use the grease wipes to supply the containment needed for scraped-off debris.

In a round of media interviews today, Stefanyshyn-Piper was repeatedly asked about the lost bag and she clearly was chagrined.

"It was definitely not the high point of the EVA," she said. "It was somewhat disheartening to open up the bag and to realize that there was grease everywhere. Well, not everywhere... but everywhere. It's interesting in space with things like a grease gun, I don't know if 'exploded' is the right word to use but it kind of seeped out, it was just a continuous ooze and unlike something on the ground where you'd find a big blob of grease, or a big pile of grease, it doesn't happen that way in space.

"In space, it just comes out in a small stream and then it, you know, breaks off, a half-an-inch piece, an inch piece, and then it floats off and then there's another piece someplace else. So you get a lot of little pieces of grease everywhere. And it seemed like every time I put my hand in the bag to try to clean one piece, I found more areas that had grease. And in the process of doing that cleaning is when the bag came loose and floated away. And that was very disheartening to see that float away."

For a split second, when she realized the bag was untethered and floating away, she thought about making a grab for it. And then, "I thought no, that would probably just make things worse and the best thing to do would be to just let it go."

Returning to the space station later, she said the "psychological thing" of knowing "we had made a mistake" was difficult. But Bowen, a first-time flier, said "it's just as much my mistake as anyone else's."

"I closed out the bag as a final (inspection) and I didn't go back and triple check everything so I'm just as guilty of this as Heide is," he said. "No matter how much anybody says something, trying to make you feel better, you know, you kind of know you have to move on, you keep moving on trying to figure out how to best accomplish the job."

While spacewalk preparations were underway today, the rest of the combined shuttle-station crew was busy hooking up the station's new water recycling gear and installing new sleep stations. The water processing equipment, designed to convert urine into potable water, is a critical element in NASA's plans to increase station crew size from three to six next year.

Running well ahead of schedule, the astronauts planned to begin initial activation later today and process the first samples of stored urine, collected by the station crew before Endeavour arrived, on Thursday.

"This evening, we will perform the initial checkout of the water processor assembly," Kerrick said. "Then tomorrow on the timeline, we will do some urine processing. There will be some crew actions at the very beginning of the day and then the urine processor will run all day long. Once it's finished with the urine processing, and I think that duration is about eight to nine hours, we have some actions to perform on the water system to vent it and then we can process in the water processor assembly.

"So overall, about two days from when we do the initialization we are about ready to produce that first sample out of the water processor assembly. Right now, we're replanning everything as the crew gets ahead so I can't tell you exactly when that sample, that moment of sampling, is going to occur."

NASA managers hope to get samples from the water recycling racks and a water dispenser before Endeavour departs. Those samples will be analyzed on the ground to help calibrate an analyzer aboard the station. But no one will actually drink any recycled water until next year, after additional samples are brought down following the next shuttle visit in February.

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Additional coverage for subscribers:
VIDEO: LAUNCH CAMERA REPLAYS
VIDEO: WEDNESDAY'S MISSION STATUS BRIEFING PLAY
VIDEO: AP, MINNEAPOLIS AND BOSTON INTERVIEWS WITH CREW PLAY
VIDEO: WEDNESDAY MORNING FLIGHT DIRECTOR INTERVIEW PLAY

VIDEO: FLIGHT DAY 5 HIGHLIGHTS MOVIE PLAY
VIDEO: RIDE ALONG WITH ASTRONAUTS "RACK-CAM" PLAY
VIDEO: COMBUSTION SCIENCE HARDWARE MOVED INTO STATION PLAY
VIDEO: AIRLOCK CAMCORDER FOOTAGE AFTER SPACEWALK PLAY
VIDEO: TUESDAY'S MISSION STATUS BRIEFING PLAY
VIDEO: EVA NO. 1 CONCLUDES PLAY
VIDEO: SOLAR ALPHA ROTARY JOINT REPAIRS BEGIN PLAY
VIDEO: TOOL BAG ACCIDENTALLY FLOATS AWAY PLAY
VIDEO: GREASE GUN SPILL MAKES MESS IN TOOL CARRIER PLAY
VIDEO: SPARE FLEX HOSE COUPLER DELIVERED TO STATION PLAY
VIDEO: EMPTY NITROGEN TANK MOVED FROM STATION TO SHUTTLE PLAY
VIDEO: TUESDAY MORNING FLIGHT DIRECTOR INTERVIEW PLAY
VIDEO: SHOW-AND-TELL OF SOLAR ALPHA ROTARY JOINT WORK PLAY
VIDEO: WALKTHROUGH OF SPACEWALK NO. 1 PLAN PLAY
VIDEO: NARRATED ANIMATION OF SPACEWALK SWAPOUT PLAY
VIDEO: FLIGHT DIRECTOR'S SUMMARY OF FLIGHT DAY 5 PLAY

VIDEO: FLIGHT DAY 4 HIGHLIGHTS MOVIE PLAY
VIDEO: CREW OPENS HATCH AND ENTERS LEONARDO PLAY
VIDEO: ATLANTA AND BOSTON TV STATIONS INTERVIEW CREW PLAY
VIDEO: MONDAY'S MISSION MANAGEMENT TEAM UPDATE PLAY
VIDEO: MONDAY'S MISSION STATUS BRIEFING PLAY
VIDEO: LEONARDO MODULE SUCCESSFULLY MOUNTED TO STATION PLAY
VIDEO: MONDAY MORNING FLIGHT DIRECTOR INTERVIEW PLAY
VIDEO: PREVIEW ANIMATION OF LEONARDO MODULE ATTACHMENT PLAY
VIDEO: SUMMARY OF CARGO BEING DELIVERED TO SPACE STATION PLAY

VIDEO: FLIGHT DAY 3 HIGHLIGHTS MOVIE PLAY
VIDEO: SUNDAY'S MISSION STATUS BRIEFING PLAY
VIDEO: SHUTTLE CREW WELCOMED ABOARD STATION PLAY
VIDEO: SPACE SHUTTLE ENDEAVOUR DOCKS TO SPACE STATION PLAY
VIDEO: ENDEAVOUR PERFORMS THE 360-DEGREE BACKFLIP PLAY
VIDEO: VIEWS OF THE SHUTTLE APPROACHING FROM BELOW PLAY
VIDEO: FLIGHT DIRECTOR'S SUMMARY OF FLIGHT DAY 3 PLAY
VIDEO: PREVIEW ANIMATION OF RENDEZVOUS AND DOCKING PLAY

VIDEO: FLIGHT DAY 2 HIGHLIGHTS MOVIE PLAY
VIDEO: SATURDAY'S MISSION STATUS BRIEFING PLAY
VIDEO: SATURDAY'S MISSION MANAGEMENT TEAM UPDATE PLAY
VIDEO: FLIGHT DIRECTOR'S SUMMARY OF FLIGHT DAY 2 PLAY
VIDEO: PREVIEW ANIMATION OF HEAT SHIELD INSPECTIONS PLAY
VIDEO: NARRATED TOUR OF ENDEAVOUR'S PAYLOAD BAY PLAY

VIDEO: FLIGHT DAY 1 HIGHLIGHTS MOVIE PLAY
VIDEO: SPACE SHUTTLE ENDEAVOUR BLASTS OFF! PLAY
VIDEO: SPACEFLIGHT NOW'S LAUNCH PAD CAMERA PLAY
VIDEO: THE FULL STS-126 LAUNCH EXPERIENCE PLAY
VIDEO: INSIDE MISSION CONTROL DURING LAUNCH PLAY
VIDEO: POST-LAUNCH NEWS BRIEFING PLAY

VIDEO: FINAL PRE-LAUNCH POLLS GIVE "GO" FOR LIFTOFF PLAY
VIDEO: SHUTTLE'S CREW MODULE HATCH CLOSED FOR FLIGHT PLAY
VIDEO: MISSION SPECIALIST DON PETTIT BOARDS PLAY
VIDEO: MISSION SPECIALIST SHANE KIMBROUGH BOARDS PLAY
VIDEO: PILOT ERIC BOE BOARDS ENDEAVOUR PLAY
VIDEO: COMMANDER CHRIS FERGUSON BOARDS ENDEAVOUR PLAY
VIDEO: ASTROVAN TAKES CREW TO LAUNCH PAD 39A PLAY
VIDEO: CREW DEPARTS QUARTERS FOR LAUNCH PAD PLAY
VIDEO: ASTRONAUTS DON SPACESUITS FOR LAUNCH PLAY
VIDEO: NARRATED RECAP OF ENDEAVOUR'S PRE-FLIGHT CAMPAIGN PLAY
VIDEO: NARRATED RECAP OF PAYLOADS' PRE-FLIGHT CAMPAIGN PLAY

VIDEO: PAD 39A SERVICE GANTRY RETRACTED FOR LAUNCH PLAY
VIDEO: THURSDAY'S COUNTDOWN STATUS AND WEATHER UPDATE PLAY
VIDEO: WEDNESDAY'S PRE-LAUNCH NEWS CONFERENCE PLAY
VIDEO: ENDEAVOUR ASTRONAUTS ARRIVE FOR LAUNCH PLAY | HI-DEF
VIDEO: TUESDAY'S COUNTDOWN STATUS AND WEATHER UPDATE PLAY

VIDEO: STATION ASTRONAUTS PREPARE FOR SHUTTLE ARRIVAL PLAY
VIDEO: ENDEAVOUR'S PAYLOADS READIED FOR TREK TO SPACE PLAY

VIDEO: UPDATE ON SHUTTLE AND STATION PROGRAMS PLAY
VIDEO: STS-126 MISSION OVERVIEW PLAY
VIDEO: PREVIEW BRIEFING ON MISSION'S SPACEWALKS PLAY
VIDEO: THE ASTRONAUTS' PRE-FLIGHT NEWS BRIEFING PLAY

VIDEO: INTERVIEW WITH COMMANDER CHRIS FERGUSON PLAY
VIDEO: INTERVIEW WITH PILOT ERIC BOE PLAY
VIDEO: INTERVIEW WITH MS1 HEIDEMARIE PIPER PLAY
VIDEO: INTERVIEW WITH MS2 STEPHEN BOWEN PLAY
VIDEO: INTERVIEW WITH MS3 DON PETITT PLAY
VIDEO: INTERVIEW WITH MS4 SHANE KIMBROUGH PLAY
VIDEO: INTERVIEW WITH MS5 SANDY MAGNUS PLAY

VIDEO: INTERVIEW WITH SPACE STATION'S EXPEDITION 17 CREW PLAY

VIDEO: ENDEAVOUR COMMANDER AND PILOT PRACTICE LANDINGS PLAY

VIDEO: ISS PROGRAM MANAGER UPDATES SOYUZ INVESTIGATION PLAY
VIDEO: ISS PROGRAM MANAGER DESCRIBES SARJ REPAIR PLAN PLAY
VIDEO: ISS PROGRAM MANAGER DISCUSSES RADIATOR DAMAGE PLAY
VIDEO: EXPEDITION 18 PRE-FLIGHT MISSION BRIEFING PLAY

VIDEO: AERIAL VIEWS OF ATLANTIS AND ENDEAVOUR PLAY | HI-DEF
VIDEO: ENDEAVOUR AT SUNRISE ON LAUNCH PAD 39B PLAY | HI-DEF
VIDEO: AERIAL VIEWS OF ENDEAVOUR AFTER ROLLOUT PLAY | HI-DEF
VIDEO: ENDEAVOUR ROLLS FROM VAB TO LAUNCH PAD PLAY | HI-DEF
VIDEO: TIME-LAPSE MOVIE OF ARRIVAL AT PAD 39B PLAY
VIDEO: TIME-LAPSE MOVIE OF ENDEAVOUR LEAVING VAB PLAY

VIDEO: SHUTTLE HOISTED FOR ATTACHMENT TO TANK PLAY | HI-DEF
VIDEO: ENDEAVOUR'S DEPARTURE FROM HANGAR PLAY | HI-DEF

VIDEO: TIME-LAPSE MOVIE OF ENDEAVOUR GOING VERTICAL PLAY
VIDEO: TIME-LAPSE MOVIE OF BEING HOISTED OFF TRANSPORTER PLAY
VIDEO: TIME-LAPSE MOVIE OF ENDEAVOUR MOVING TO VAB PLAY
MORE: STS-126 VIDEO COVERAGE
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