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WELCOME TO SPACE TO GROUND, I’M KATHRYN
CLAYTON.

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THIS WEEK SPACE STATION CREWMEMBERS COMPLETED YET ANOTHER SPACEWALK AND PREPARED TO SAY

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GOODBYE TO THE CYGNUS SPACECRAFT.

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LAST WEEKEND, ASTRONAUT ANDREW MORGAN AND
EUROPEAN SPACE AGENCY ASTRONAUT LUCA PARMITANO

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COMPLETED THE FOURTH AND FINAL SPACEWALK TO
REPAIR THE ALPHA MAGNETIC SPECTROMETER OR

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AMS.

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IN THE DAYS FOLLOWING THE SPACEWALK, PAYLOAD
CONTROLLERS TURNED ON NEW COOLING PUMPS AND

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ARE IN THE PROCESS OF RESUMING SCIENCE OPERATIONS ON THE COMPLEX EXPERIMENT, WHICH MEANS THE

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AMS WILL BE BACK TO WORK SOON SEARCHING FOR
EVIDENCE OF DARK MATTER AND ANTIMATTER THAT

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GIVE US INSIGHT INTO THE ORIGINS OF THE UNIVERSE.

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THIS WAS THE SEVENTH SPACEWALK FOR ANDREW
MORGAN.

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LUCA PARMITANO NOW HOLDS THE EUROPEAN RECORD FOR CUMULATIVE SPACEWALKING TIME.

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LOGGING 33 HOURS AND NINE MINUTES OVER THE
COURSE OF SEVEN SPACEWALKS

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THE EXPEDITION 61 CREW TURNED THEIR ATTENTION
TO PACKING NOTHRUP GRUMMANS CYNGUS RESUPPLY

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FOR RELEASE.

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CYGUS WAS PACKED WITH TRASH AND DISCARDED
HARDWARE TO PREPARE FOR ITS RELEASE ON FRIDAY.

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THE RESUPPLY SHIP ARRIVED IN NOVEMBER AND
CARRIED OVER 8200 POUNDS OF SCIENCE AND CARGO

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TO THE STATION.

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CYGNUS WILL DEMONSTRATE A NEW RELEASE POSITON FOR DEPARTURE OPERATIONS AND WILL INCORPORATE

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THE FIRST GROUND CONTROLLED RELEASE.

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THIS WEEK’S QUESTION COMES FROM DARIN WHO
WANTS TO KNOW WHAT POWER SOURCE POWERS AND

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MANUEVERS THE SPACE STATION?

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THE ISS BOASTS 4 SETS OF SOLAR ARRAYS THAT
CONVERT SOLAR ENERGY TO ELECTRICITY.

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THE STATIONS SOLAR ARRAYS ARE ATTACHED TO
THE STATIONS TRUSS AND ROTATE TO FACE THE

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SUN TO MAXIMIZE SUNLIGHT EXPOSURE.

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THE SOLAR ARRAYS GENERATE 84 TO 120 KILOWATTS
OF ELECTRICITY OR ROUGHLY ENOUGH TO POWER

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40 HOMES.

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WHILE THE SOLAR ARRAYS PRODUCE MORE THAN ENOUGH ELECTRICITY TO CHARGE THE STATION’S BATTERIES

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AND PROVIDE ELECTRICITY FOR SYSTEMS AND INVESTIGATIONS, THIS ENERGY IS NOT USED TO PHYSICALLY MANUEVER ISS.

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IN ORDER TO MAINTAIN AN AVERAGE ALTITUDE OF
400 KILOMETERS RELATIVE TO THE EARTH.

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THE ISS RELIES ON THE ENGINES OF THE RUSSIAN
ZVESDA MODULE, OR VISITING VEHICLES TO PROVIDE

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THE FORCE NECESSARY TO ADJUST ITS POSITION.