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three minus 15 seconds and counting

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also there's go 10987 we have a go for

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engine start three two one ignition and

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liftoff discovery now on its way to

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service NASA's Hubble Space Telescope

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Houston now controlling

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roll maneuver is complete aboard

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discovery the vehicles now in a

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heads-down position on course for a

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twenty eight and a half degree 309

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nautical mile orbit discovery already

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one and one and a half miles in altitude

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and downrange from the launch site one

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and a half miles as well three main

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engines beginning to throttle down now

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as the orbiter prepares to pass through

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the area of maximum dynamic pressure on

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the vehicle in the lower atmosphere the

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three engines now at 67% of rated thrust

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the engines now beginning to throttle

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back up

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his discovery we have Italian happy doc

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it must be a beautiful sight yeah big a

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price that is to learn free drift and

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dr. Steve he's going to get self cope

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and we see that dark

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Kelly joined discovery see I wish you

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could see the expression on dr. Stevie's

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face looks like he just shook hands with

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an old friend

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dot mark they should coming up seven and

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a half two nothing turns and of course

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you watch for the washer

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and as we can see mark Lee now using the

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power ratchet tool to remove the six

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captive washers bolts and washers there

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are three on either side of this data

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interface unit all of the 18 cables now

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have been removed from the side of the

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box

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since these are not captive bolts and

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washers the crew has to be very careful

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when they are removed and you could see

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mark Li after removing that first bolt

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putting it in a temporary stowage

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position on the temporary handhold that

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he's installed on the DI you

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and as can be seen from this picture

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discovery is approaching an orbital

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sunrise as it heads across the upper

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northwest portion of Africa reaching the

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midpoint of the 73rd orbit of

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Discovery's mission this view from the

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elbow camera on the shuttles robot arm

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Steve Smith on the right the

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free-floating astronaut with while Mark

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Lee with the red stripes on the legs of

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his suit mounted in the shuttles

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manipulator foot restraint on the

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shuttles robot arm

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slightly left jump slightly left a

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little bit more

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we're looking at it and it's a great

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view

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this view over the left shoulder of

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Gregg Harbaugh the eight connectors on

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the solar array drive electronics box

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are very similar to the connectors on

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the back of a processing unit on the

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back of a home computer the two tiny

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screws he just D mated from the first

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connector he's now set to D mate one

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connector and connected to the new unit

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and this discovery for Greg and Joe

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stories got a big smile on his face and

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he's given you a big thumb thumbs up

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we're both envious and I'm sure that you

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you join us and wanted to congratulate

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the designers up at Goddard who came up

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with this really elegant solution to the

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problem that conversation between Jeff

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Hoffman here in Mission Control

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referencing this same task that they

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performed three years ago on the top or

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in the number one solar array drive

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electronics box the newly designed

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connectors much more evie a friendly the

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old design had the crew members changing

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those out directly against the box

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itself

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again the plan is for Greg Harbaugh to

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disconnect each one of these connectors

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one at a time and then connect it to its

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new location on the refurbished SolarAid

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drive electronics box

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say things all in good shape on this

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connector unlatched

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and Greg Harbaugh will place this pistol

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grip tool directly on the tiny screws on

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either side of each

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that one is free

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this moratoria fallenness so change one

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of the city

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alright I just flipped it slightly out

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on the setting and if man was a call

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earlier that's happened actually to both

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mark and I a couple times

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Gregg Harbaugh and Joe Tanner have now

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been conducting this spacewalk for two

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hours in two minutes they began at 9:45

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p.m. Central time 10:45 last night

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Eastern Time

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okay

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working successfully and I'd say you

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graduated with honors and also Devin

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Taylor who picked up after him I'll bet

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they'd support this is an excellent tool

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and Houston discovery stated you are is

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installed

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we'll give you know I have this test go

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after these fasteners are on say T 1

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copy Steve

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we just got a note from Tim Allen up

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here Tim Allen dick to be exact and Fox

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has been on the home improvement several

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times and as we go around the different

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centers were known as there's the

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astronauts and a guy from

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home-improvement all we've had a couple

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of terms that they use all the time on

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home improvement with the best

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description of what we've done to the

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Hubble Space Telescope and while we've

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accomplished is that we've rewired it

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and we've added

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and that scientific power we didn't we

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didn't jumpstart the solar arrays or

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anything like that and so just in

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closing you know thanks a lot to

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everybody one more time

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gear is down and locked

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main gear touchdown

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nose gear touchdown discovery rolling

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out on runway one-five at the Kennedy

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Space Center completing 150 orbits

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traveling 4.1 million miles ending the

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second sub servicing mission to the

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Hubble Space Telescope