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sooo shuttle launch control at t-minus

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three hours and holding we're now close

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to entering the final fab of five and a

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half hours of the countdown for the

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launch of last flight of space shuttle

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Endeavour on mission sts-134 the

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countdown is being controlled from

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firing room 4 at the launch control

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center here at complex 39 at the Kennedy

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Space Center in Florida and we are on

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schedule for liftoff targeted for a 56

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a.m. Eastern time this is the 134th

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launch of the space shuttle program the

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25th launch of space shuttle Endeavour

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and the 36th flight to the International

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Space Station endeavour will deliver the

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Alpha Magnetic Spectrometer call AMS to

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a particle physics detector designed to

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search for various types of unusual

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matter by measuring cosmic rays its

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experiments are designed to help

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researchers study and look for clues to

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the formation of the universe endeavour

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will also bring up to the station the

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Express logistics carrier 3 that

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external platform for the space station

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that holds large equipment that will

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carry spare parts and equipment to

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sustain the Space Station's operation in

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space once the last space shuttle flight

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has occurred this summer there are four

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plan DBAs or spacewalks outside the

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International Space Station during the

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sts-134 mission to do maintenance and

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install new components these will be the

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last scheduled spacewalks by the space

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shuttle crew for the remainder of the

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program meanwhile the final inspection

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team has been measuring the temperatures

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on the surface of the vehicle looking

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for any ice buildup and performing a

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final check for any fat or foreign

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object debris that could strike the

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orbiter upon ignition the seven-member

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crew will have walked up and down the

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entire 380 foot tower the fixed service

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structure at the conclusion of their

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weather continues to be favorable with

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just a 30% chance of not meeting our

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launch weather criteria this morning

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slight chance for a low cloud ceiling

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and a crosswind but at least at this

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point in time neither is being observed

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we have one hour 28 minutes 24 seconds

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remaining in this planned built-in hold