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"HOUSTON, STATION
ON SPACE TO GROUND."

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WELCOME TO SPACE TO GROUND,
I'M KATHRYN MCLAURIN.

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THE FIRST OF THREE OCTOBER
SPACEWALKS TOOK PLACE THIS WEEK.

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NASA ASTRONAUTS RANDY BRESNIK

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AND MARK VANDE HEI SPENT
SEVERAL HOURS WORKING

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IN THE VACUUM OF
SPACE ON THURSDAY.

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AFTER GETTING SUITED UP AND OUT
THE DOOR, THE DUO WENT RIGHT

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TO WORK ON THEIR PRIMARY
TASK, REPLACING ONE

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OF TWO LATCHING END EFFECTORS

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ON THE STATION'S
ROBOTIC ARM - CANADARM2.

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THIS IS THE PART OF THE
ARM THAT GRABS ONTO THINGS,

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FROM VISITING SPACECRAFT TO
THE SPACE STATION ITSELF.

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THE NEXT TWO SPACEWALKS ARE
COMING UP ON OCTOBER 10TH

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AND 18TH AND WILL BE FOCUSED

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ON LUBRICATING THE NEWLY
INSTALLED END EFFECTOR

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AND INSTALLING NEW
HIGH-DEFINITON CAMERAS

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ON THE OUTSIDE OF STATION.

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AND IT'S GROWING SEASON ONCE
AGAIN ONBOARD THE SPACE STATION.

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THE CREW JUST RECENTLY SET
UP A NEW BATCH OF SEEDS

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FOR THE ONGOING VEGGIE
EXPERIMENT WHICH LOOKS

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TO EXPAND OUR ABILITY TO
GROW FRESH FOOD IN SPACE,

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POTENTIALLY SUPPLEMENTING THE
DIETS OF LONG-DURATION CREWS.

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THIS WILL BE THE
FIRST TIME A VARIETY

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OF CROPS WILL BE
GROWN SIMULTANEOUSLY.

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THE CREW ROUTINELY TENDED TO
THE PLANTS THROUGHOUT THE WEEK,

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AND WILL LOOK TO
HARVEST IN A FEW WEEKS.

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THIS WEEK'S TWITTER QUESTION
COMES FROM BOB RAPP WHO WANTED

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TO KNOW HOW MANY
AIRLOCKS ARE ON STATION.

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RIGHT NOW THERE ARE THREE

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WITH SOME SIGNIFICANT
DIFFERENCES IN HOW THEY'RE USED.

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THERE ARE TWO AIRLOCKS AVAILABLE

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FOR SPACEWALKING HUMANS
RIGHT NOW ON STATION:

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THE QUEST AIRLOCK ON THE U.S.
SIDE AND THE PIRS AIRLOCK

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ON THE RUSSIAN SEGMENT.

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A THIRD AIRLOCK IS LOCATED
IN THE JAPANESE KIBO MODULE

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AND IS USED TO MOVE PAYLOADS
BOUND FOR THE VACUUM OF SPACE.

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KEEP SENDING US YOUR
QUESTIONS USING THE HASHTAG