STS-120 Mission Updates: Part 1

Second Spacewalk Endsfor Shuttle Mission
28 October 2007 12:09 p.m. EDT

HOUSTON ? AstronautsScott Parazynski and Daniel Taniare repressurizing the Quest airlock aboard the InternationalSpace Station (ISS), effectively ending today?s spacewalk, the second of fiveplanned for the shuttle Discovery?s STS-120 mission.

Total spacewalking time: 6hours, 33 minutes.

The two astronauts helpeddetach the Port 6 solar array truss from atop the ISS, outfitted the new Harmony node with new handrails, robotic arm grapplefixture and other equipment, inspected other handrails for sharp edges andexamined a large solar array-turning joint.

A wrap up story of today?sspacewalking activities will be posted to the SPACE.com homepage.

NASA is broadcasting Discovery?s STS-120 missionto the International Space Station on NASA TV. Click here for SPACE.com's NASA TV feed or follow the NASA TV link at theupper left of this page.

- Tariq Malik

Astronaut SpiesHometown as Spacewalk Nears End
28 October 2007 11:56 a.m. EDT

HOUSTON ? Astronaut Dan Tanispotted his hometown of Lombard, Illinois, as he and crewmateScott Parazynski wrap up a 6.5-hour spacewalk outsidethe International Space Station (ISS).

?I?m looking at myhometown!? Tani said. ?Wow, what an awesome view.?

The two spacewalkers areback in the station?s Quest airlock after helping to detach the Port 6 solararray truss from its mast-like perch atop the ISS. They also outfitted the new Harmony node with new handrails, robotic arm grapplefixture and other equipment, inspected other handrails for sharp edges andexamined a large solar array-turning joint. They were unable to replace an ISScircuit breaker box for lack of time.

NASA is broadcasting Discovery?s STS-120 missionto the International Space Station on NASA TV. Click here for SPACE.com's NASA TV feed or follow the NASA TV link at theupper left of this page.

- Tariq Malik

Spacewalkers to Returnto ISS Airlock
28 October 2007 11:38 a.m. EDT

HOUSTON ? As they pass the six-hour mark oftheir spacewalk outside the International Space Station (ISS), astronauts ScottParazynski and Daniel Tani arehalting their work to install a robotic arm grappling point to the Earth-facingside of the station?s new Harmony node.

Today?s spacewalk beganat about 5:32 a.m. EDT (0932 GMT). The astronauts helped detach the station?sPort 6 solar array, configure power and data cables for the solar powersegment, installed handrails and other equipment to the exterior of the new Harmony node. Tani alsoinspected a large joint on the station?s starboard truss and found metalshavings inside, which the took samples of.

He also exampled ahandrail suspected to have sharp edges, which could pose a risk to astronautsshould it rip their protective spacesuits.

NASA is broadcasting Discovery?s STS-120 missionto the International Space Station on NASA TV. Click here for SPACE.com's NASA TV feed or follow the NASA TV link at theupper left of this page.

- Tariq Malik

Spacewalkers AttachGrapple Fixture to Harmony
28 October 2007 11:01 a.m. EDT

HOUSTON ? Spacewalkers Scott Parazynski and Daniel Tani arenow focusing on attaching a grapple fixture to the hull of the Harmony nodeoutside the International Space Station (ISS) that will allow the outpost?srobotic arm to latch onto the module and move it to a permanent home early nextmonth.

They are now near the5.5-hour mark of a planned 6.5-hour spacewalk.

NASA is broadcasting Discovery?s STS-120 missionto the International Space Station on NASA TV. Click here for SPACE.com's NASA TV feed or follow the NASA TV link at theupper left of this page.

- Tariq Malik

Spacewalkers OutfitSpace Station
28 October 2007 10:26 a.m. EDT

HOUSTON ? Spacewalkers Scott Parazynski are Daniel Tani arenearing the five-hour mark of today?s planned 6.5-hour excursion outside theInternational Space Station (ISS) today.

Tani is wrangling stiff cables as hereroutes cabling that will transfer power between the station and its Port 6(P6) solar array once the truss is reinstalled on Tuesday. Parazynskicontinues work outfitting the Harmony node for orbital flight as part of theISS.

NASA is broadcasting Discovery?s STS-120 missionto the International Space Station on NASA TV. Click here for SPACE.com's NASA TV feed or follow the NASA TV link at theupper left of this page.

- Tariq Malik

Spacewalkers CompleteISS Joint Inspection, Outfit Harmony
28 October 2007 9:56 a.m. EDT

HOUSTON ? Spacewalker Daniel Tani has completed his inspection of the InternationalSpace Station?s starboard solar array rotary joint, with Mission Control preparingto resume rotation of the 10-foot (three-meter) wide joint.

Meanwhile, Tani?s spacewalking partner Scott Parazynskiis continuing work to outfit the Harmony node with new handrails and removingprotective caps from other hardware.

NASA is broadcasting Discovery?s STS-120 missionto the International Space Station on NASA TV. Click here for SPACE.com's NASA TV feed or follow the NASA TV link at theupper left of this page.

- Tariq Malik

Spacewalker TakesSamples of ISS Joint Shavings
28 October 2007 9:28 a.m. EDT

HOUSTON ? Spacewalker Daniel Tani has taken a sample of the metal shavings he spottedinside the joint that rotates the International Space Station?s starboard solararrays.

He used taped to gatherseveral flakes of the material, which he described as shavings or filings akinto the toys in which children drag around iron filings with a large magnet. ?

NASA is broadcasting Discovery?s STS-120 missionto the International Space Station on NASA TV. Click here for SPACE.com's NASA TV feed or follow the NASA TV link at theupper left of this page.

- Tariq Malik

Spacewalker TakeCloser Look at ISS Joint
28 October 2007 8:58 a.m. EDT

HOUSTON ? Spacewalker Daniel Tani is taking a closer look at a large rotary joint on thestarboard truss of the International Space Station (ISS). He removed the outercover of part of the joint and reported seeing what appeared to be metalshavings coating part of the internal mechanism.

He also reported apparentdamage on part of the structure and will swap digital cameras with spacewalkingpartner Scott Parazynski to take photographs.

?It?s quite clear thatthere?s metal to metal scraping, and it?s widespread,? Tanisaid.

NASA is broadcasting Discovery?s STS-120 missionto the International Space Station on NASA TV. Click here for SPACE.com's NASA TV feed or follow the NASA TV link at theupper left of this page.

- Tariq Malik

Spacewalkers InspectISS Joint, Outfit Harmony
28 October 2007 8:25 a.m. EDT

HOUSTON ? Spacewalker Daniel Tani is inspecting a massive rotary joint designed torotate the International Space Station?s (ISS) starboard solar arrays to trackthe Sun.

The solar arrays havebeen exhibiting some odd vibrations, which engineers thought might be due tosome sort of obstruction such as bolt of thermal blanket jutting into therotation path. Tani said he could see no sign of anyobstruction or any other explanation as to why the vibration was occurring. Heis now snapping photos of the 10-foot (three-meter) wide joint.

Meanwhile, hisspacewalking partner Scott Parazynski continues toadd new handrails to the station?s new Harmony node.

NASA is broadcasting Discovery?s STS-120 missionto the International Space Station on NASA TV. Click here for SPACE.com's NASA TV feed or follow the NASA TV link at theupper left of this page.

- Tariq Malik

Solar Array TrussReaches Parking Spot, Spacewalk Continues
28 October 2007 8:01 a.m. EDT

HOUSTON ? As spacewalkers Scott Parazynski and Daniel Tani continuetheir work outside the International Space Station (ISS), their roboticarm-wielding crewmates have completed work to move the massive Port 6 solararray truss to an overnight parking spot.

Lead robotics operatorStephanie Wilson and crewmate Douglas Wheelock used the space station?s 57-foot(17-meter) robotic arm to move the 17.5-ton Port 6 truss away from its perchatop the outpost?s Z1 truss and into an outboard spot within reach of theshuttle Discovery?s robotic arm.

The truss will stay thereuntil early Monday, when it will be grabbed by Discovery?s robotic arm.

Parazynski continues to outfit the new Harmony node with handrails. Tanihas completed his own handrail inspection on an equipment cart, where he lookedfor sharp edges, and is now inspecting a large rotary joint for any sign offriction or obstructions.

NASA is broadcasting Discovery?s STS-120 missionto the International Space Station on NASA TV. Click here for SPACE.com's NASA TV feed or follow the NASA TV link at theupper left of this page.

- Tariq Malik

Spacewalkers OutfitHarmony Node, Inspect Handrails
28 October 2007 7:36 a.m. EDT

HOUSTON ? Spacewalkers Scott Parazynski and Daniel Tani havesplit up as they work outside the International Space Station (ISS), with one outfittingthe newly installed Harmony node and the other hunting sharp edges on theoutpost?s exterior.

Parazynski is installing new handrails andother equipment to the exterior of the station?s Harmony node. Tani, meanwhile, is inspecting a series of handrails on oneof two tool-carrying carts that ISS engineers believe might have some sharpedges that could damage spacesuit gloves.

NASA cut short an August spacewalkduring the Endeavour shuttle?s STS-118 mission when an astronaut found a smalltear in the outer layers of his spacesuit glove. A spacewalker during aDecember 2006 mission also cut one of his gloves, though the damage wasn?t spotteduntil after the mission. Finding a possible source for the damage gloves willallow spacewalk planners to avoid similar damage in the future.

NASA is broadcasting Discovery?s STS-120 missionto the International Space Station on NASA TV. Click here for SPACE.com's NASA TV feed or follow the NASA TV link at theupper left of this page.

- Tariq Malik

Solar Power TowerPlucked Free from ISS
28 October 2007 7:16 a.m. EDT

HOUSTON ? The International Space Station?s(ISS) oldest U.S.solar power segment ? the Port 6 (P6) truss ? has been plucked free from itsperch atop the outpost?s Z1 truss.

Wielding the station?srobotic arm, astronauts Stephanie Wilson and Douglas Wheelock eased the 17.5-tonP6 segment free after spacewalkers Scott Parazynskiand Daniel Tani removed four bolts, four grounding strapsand nine power and data connections linking the truss to the ISS. It is thetruss?s first move since its installation in 2000.

?Don?t drop it,? joked Parazynski to the roboticarm operators as the truss slowly moved away. ?Good driving.?

The two astronauts thenheaded back to the station?s new Harmony module, wherethey will install handrails, a robotic arm attachment point and otherequipment.

?Hey, the station looksdifferent now,? Parazynski said.

?Oh, that?s right, there?sa piece that?s gone,? Tani said.

NASA is broadcasting Discovery?s STS-120 missionto the International Space Station on NASA TV. Click here for SPACE.com's NASA TV feed or follow the NASA TV link at theupper left of this page.

- Tariq Malik

Spacewalkers Work toUnbolt ISS Truss Segment
28 October 2007 6:54 a.m. EDT

HOUSTON ? Spacewalkers Scott Parazynski and Daniel Tani have successfullyremoved four bolts securing the old Port 6 truss (P6) truss to theInternational Space Station (ISS).

Earlier, theydisconnected nine power and data cables, as well as four grounding straps. Acapture claw will hold the massive 17.5-ton girder in place until it is time topluck it free using the station?s robotic arms.

NASA is broadcasting Discovery?s STS-120 missionto the International Space Station on NASA TV. Click here for SPACE.com's NASA TV feed or follow the NASA TV link at theupper left of this page.

- Tariq Malik

SpacewalkersDisconnect Lines, Bolts on Solar Power Tower
28 October 2007 6:28 a.m. EDT

HOUSTON ?Spacewalkers Scott Parazynski and Daniel Tani havedisconnected nine power and data umbilical lines connecting the old Port 6 (P6)solar array truss to the International Space Station (ISS).

The are now manually removing four boltsanchoring the 17.5-ton solar power truss segment to the top of the station?s Z1truss. Once removed, the truss will be held in place by a capture claw thatwill be released to allow the station?s robotic arm to lift the structureclear.

Inside the ISS, astronauts DouglasWheelock and Stephanie Wilson are wielding the station?s robotic arm.

NASA is broadcasting Discovery?s STS-120 missionto the International Space Station on NASA TV. Click here for SPACE.com's NASA TV feed or follow the NASA TV link at theupper left of this page.

- Tariq Malik

Spacewalkers ExitSpace Station Airlock
28 October 2007 5:55 a.m. EDT

HOUSTON ?Spacewalkers Scott Parazynski and Daniel Tani haveleft the Quest airlock and are now working outside the International SpaceStation (ISS) for today?s busy spacewalk.

?Is it good to be back Dan?? asked Parazynski.

?It?s good to be back inspace,? replied Tani, who is making his secondspaceflight as a new member of the station?s Expedition 16 crew.

The astronauts are nowheading to the station?s Z1 truss atop the Unity node, which serves as the baseof the Port 6 solar power segment. There, they will detach a series of powerand data connections along with four large bolts so the 17.5-ton solar powersegment can be pried loose from its mount by the station?s robotic arm.

NASA is broadcasting Discovery?s STS-120 missionto the International Space Station on NASA TV. Click here for SPACE.com's NASA TV feed or follow the NASA TV link at theupper left of this page.

- Tariq Malik

Second SpacewalkBegins for Shuttle Mission
28 October 2007 5:28 a.m. EDT

HOUSTON ?Spacewalkers Scott Parazynski and Daniel Tani haveofficially begun their second spacewalk outside the International Space Station(ISS), with their spacesuits now on internal power and the outer Quest airlockhatch open.

The spacewalk began atabout 5:34 a.m. EDT (0934 GMT).

?It?s a beautiful day, lookat that,? Tani said.

NASA is broadcasting Discovery?s STS-120 missionto the International Space Station on NASA TV. Click here for SPACE.com's NASA TV feed or follow the NASA TV link at theupper left of this page.

- Tariq Malik

Space Crane OperatorsGrapple ISS Solar Power Truss
28 October 2007 5:28 a.m. EDT

HOUSTON ? While spacewalkers Scott Parazynski and Daniel Tani prepareto begin today?s spacewalk to pluck the massive Port 6 solar power truss freeof the International Space Station (ISS), astronauts inside the orbitallaboratory have taken firm hold of the mast-like segment.

Discovery shuttleastronauts Stephanie Wilson and Douglas Wheelock used the station?s 57-foot (17-meter)robotic arm to latch onto the Port 6 truss. They will pry the 17.5-ton station segmentfree of its mount atop the station?s central Z1 truss once Parazynskiand Tani disconnect a series of bolts and umbilical lines.

NASA is broadcasting Discovery?s STS-120 missionto the International Space Station on NASA TV. Click here for SPACE.com's NASA TV feed or follow the NASA TV link at theupper left of this page.

- Tariq Malik

Astronauts Set toBegin Second Spacewalk
28 October 2007 4:56 a.m. EDT

HOUSTON ? Spacewalkers Scott Parazynski and Daniel Tani aregearing up for the second spacewalk outside the International Space Station (ISS)and are about an hour ahead of their planned schedule.

The astronauts are clad intheir white NASA spacesuits and inside the crew lock portion of the station?sQuest airlock, with the compartment?s depressurization under way and hatchopening to follow. They were due to begin today?s spacewalk at 5:58 a.m. EDT (0958GMT), but are well ahead of schedule.

The primary tasks fortoday?s spacewalk: detaching the massive, 17.5-ton Port 6 solar power trussfrom its mast-like perch atop the ISS in the first stage in a three-day, twospacewalk process of moving the solar power segment to the port edge of thestation?s main truss.

Mission Control awoke thecrew at about 12:08 a.m. EDT (0408 GMT) with the song ?What a Wonderful World?by Louis Armstrong, a tune chosen specifically for veteran spaceflyerScott Parazynski.

?Good morning Discovery! Aspecial good morning to you today Scott,? NASA astronaut Shannon Lucid told thecrew from Mission Control. ?It's a great day for an EVA.?

?That's how you do it Shannon! That's how you start the day in space,? Parazynski said. ?I can't think of a more beautiful way tobegin the day than hear those words. It really describes the view from space,especially as seen through an EMU visor. Really lookingforward to it, getting out there with my good friend Dan. I'd like tothank my wife Gail and my kids Luke and Jenna. They really help me see thewonder of the world. Have a great day Shannon.?

NASA is broadcasting Discovery?s STS-120 missionto the International Space Station on NASA TV. Click here for SPACE.com's NASA TV feed or follow the NASA TV link at theupper left of this page.

- Tariq Malik

Astronauts ChristenHarmony Node Aboard ISS
27 October 2007 8:36 a.m. EDT

HOUSTON ? The newest addition to theInternational Space Station is open for business, temporarily, as astronautsopened the hatch to the outpost?s new Harmony node.

Wearing protective masksand goggles, ISS Expedition 16 commander Peggy Whitson and Italian shuttleastronaut Paolo Nespoli opened the hatch to theItalian-built node at 8:24 a.m. EDT (1224 GMT).

The node is parked at atemporary docking port on the station?s Unity module. It will be moved lateronce the shuttle Discovery departs the ISS on Nov. 4.

NASA is broadcasting Discovery?s STS-120 missionto the International Space Station on NASA TV. Click here for SPACE.com's NASA TV feed or follow the NASA TV link at theupper left of this page.

- Tariq Malik

Astronauts Prepare toOpen New ISS Room
27 October 2007 6:28 a.m. EDT

HOUSTON ? The 10 astronauts aboard NASA?sshuttle Discovery and the International Space Station (ISS) are preparing the new Harmony node for its grand entrance aboard theorbital laboratory. Hatch opening is set for about 8:58 a.m. EDT (1258 GMT).

The astronauts are runningpower and data conne

Have a news tip, correction or comment? Let us know at community@space.com.