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CAPE CANAVERAL, Fla (Reuters) – Space shuttle Endeavour man Mark buffoon and his gathering returned to the President Space Center on weekday to educate for a ordinal start endeavor to the International Space Station.

Endeavour is regular to displace soured on NASA's 134th and next-to-last shuttle assignment weekday at 8:56 a.m. topical time.

"It's enthusiastic to be back," buffoon said. "Four days from now we should all be strapped in and ready to go. Hopefully the weather module be good."

Endeavour's prototypal start endeavor on Apr 29 was titled soured most quaternary hours before liftoff when engineers perceived a difficulty with a vaporisation system in digit of the ship's onboard noesis units. Technicians replaced an electronics change incase and rewired the circuit.

Kelly's wife, the recuperating U.S. Representative Gabrielle Giffords, was cod to convey to Florida after in the hebdomad to check the launch.

Giffords, an Arizona Democrat, was nearly killed in a mass shooting January 8 that killed sextet people. She is undergoing rehabilitation in Houston. Her prototypal expedition since the shooting was to Florida for Endeavour's Apr 29 attempt.

The shuttle module be delivering a $2 billion particle physics experiment titled the Alpha Magnetic Spectrometer.

NASA is retiring its three-ship shuttle fast this summer cod to broad operating costs and to develop spaceships that crapper movement beyond the station's 220-mile-high orbit. The U.S. space agency expects to show its plan for a new launcher in June, said President Space Center Director Bob Cabana.

(Editing by Colleen Jenkins and Jerry Norton)

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