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from launch complex 39 at the kennedy

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space center in florida

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this is shuttle launch control at t

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minus three hours and holding

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we are now close to entering the final

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hours of the countdown for the launch of

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the last flight of space shuttle

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endeavour on mission sts-134

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the countdown is being controlled from

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firing room four of the launch control

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center

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and will remain on schedule for a

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liftoff targeted for

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3 47 p.m eastern time

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we have about an hour and 18 minutes

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remaining in this plan built in hold

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this is the 134th launch of the space

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shuttle program the 25th launch of space

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shuttle endeavour and the 36th flight to

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the international space station

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this is currently scheduled as a 14-day

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mission

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with a landing at kennedy space center

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currently planned for friday may 13th

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at 9 22 a.m

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there are six astronauts who will

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shortly be boarding endeavour

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in route to rendezvous with the

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rendezvous with the space station

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planned to occur on thursday

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endeavour will be delivering the alpha

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magnetic spectrometer called ams2

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a particle physics detector which is

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designed to search for various types of

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unusual matter by measuring cosmic rays

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and its 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

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endeavor will also bring up to the

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station the express logistics carrier 3

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an external platform for the space

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station that holds large equipment that

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will carry spare parts and equipment to

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sustain the space station operations

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once the last space shuttle flight has

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occurred early this summer

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there are four planned evas or

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spacewalks outside the international

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space station during the sts-134 mission

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to do maintenance and install

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new components

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and these will be the last scheduled

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space walks

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by space shuttle crew members

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for the space shuttle program

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so at this time we remain on schedule

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for our liftoff of endeavor at 3 47 pm

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this afternoon