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"HOUSTON, STATION ON SPACE TO GROUND."

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WELCOME TO SPACE TO GROUND, I’M GARY JORDAN.

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THE FIRST OF A SERIES OF COMPLICATED SPACEWALKS TO REPAIR A PARTICLE PHYSICS EXPERIMENT IS

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NOW COMPLETE.

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ANDREW MORGAN OF NASA AND LUCA PARMITANO OF THE EUROPEAN SPACE AGENCY SUITED UP AND SPENT

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TIME OUTSIDE THE INTERNATIONAL SPACE STATION PREPARING THE WORKSITE AROUND THE ALPHA MAGNETIC SPECTROMETER.

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THIS PARTICLE PHYSICS DETECTOR HAS BEEN ATTACHED TO THE SPACE STATION SINCE 2011, AND HAS COLLECTED

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MORE THAN 100 BILLLION PARTICLES THAT MAY
PROVIDE SCIENTISTS WITH MORE ABOUT ANTIMATTER,

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DARK MATTER, COSMIC RAYS, AND THE FORMATION OF THE UNIVERSE.

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MORGAN AND PARMITANO WILL BE REPLACING COOLING PUMPS IN UPCOMING SPACEWALKS, AND SPENT MUCH

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OF THE FIRST SPACEWALK PREPARING THEIR WORKSITE AND REMOVING A DEBRIS SHIELD.

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HEAD TO THE AGENCY’S WEBSITE TO LEARN HOW AND WHEN TO WATCH THESE SPACEWALKS LIVE.

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THE SPACE STATION PROVIDES A GREAT PLATFORM TO HELP UNDERSTAND THE ENVIRONMENT OF SPACE.

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ANOTHER EXPERIMENT INVESTIGATES ITS INFLUENCE ON MATERIALS.

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MISSE IS A FACILITY THAT IS MOUNTED ON THE
OUTSIDE OF THE SPACE STATION, AND ALLOWS TRAYS

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OF MATERIALS TO BE SENT OUTSIDE THROUGH AN AIRLOCK TO SEE WHAT HAPPENS WHEN THEY’RE

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EXPOSED TO THE HARSH ENVIRONMENT OF SPACE.

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ASTRONAUTS ON THE SPACE STATION RETRIEVED SAMPLES AND STOWED THEM FOR LATER ANALYSIS.

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THIS WEEK’S QUESTION COMES FROM VERONICA, WHO ASKED IF THE ALPHA MAGNETIC SPECTROMETER

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WILL REMAIN WITHOUT A DEBRIS SHEILD AFTER
THE WORK IS DONE.

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SPACEWALK OFFICER JOHN MULARSKI ANSWERED THIS QUESTION IN A BRIEFING THAT SET THE STAGE

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FOR ALL THE WORK BEING DONE.

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"THE DEBRIS SHIELD, THERE WON'T BE A NEW ONE INSTALLED DUE TO POSITION OF AMS.

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THAT DEBRIS SHIELD ISN'T NEEDED IN THE FUTURE, AND SO WE'LL JUST CLOSE IT OUT WITH SOME KEVLAR

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BLANKETS TO PROTECT THE AREA THAT WE'VE OPENED UP."