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WELCOME TO SPACE TO GROUND, I’M LEAH CHESHIER.

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THIS WEEK, ASTRONAUTS CONTINUED SPECIALIZED  SPACEWALKS TO REPAIR A COSMIC RAY DETECTOR,

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HELPING US UNDERSTAND BEYOND WHAT WE CAN SEE.

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ON NOVEMBER 22, NASA ASTRONAUT ANDREW MORGAN AND EUROPEAN SPACE AGENCY ASTRONAUT LUCA PARMITANO

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SUITED UP TO SPEND A DAY IN THE VACCUM OF
SPACE.

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THE DUO COMPLETED THE SECOND OF FOUR PLANNED SPACEWALKS TO REPAIR THE ALPHA MAGNETIC SPECTROMETER,

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AN EXPERIMENT THAT SIFTS THROUGH COSMIC RAY PARTICLES AND DETERMINES THEIR CHARACTERISTICS.

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THE ASTRONAUTS USED TOOLS DEVELOPED SPECIFICALLY TO COMPLETE OUT-OF-THE-ORDINARY SPACEWALK

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TASKS, LIKE CUTTING THROUGH STAINLESS STEEL TUBES.

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THE ASTRONAUTS WILL CONDUCT TWO MORE SPACEWALKS TO CONTINUE REPAIRS ON THE AMS, PROVIDING

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ADDITIONAL YEARS OF RESEARCH INTO THE SECRETS OF OUR UNIVERSE.

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BOEING’S STARLINER SPACECRAFT WAS ON A ROLL THIS WEEK, PREPARING FOR ITS MAIDEN VOYAGE

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TO THE INTERNATIONAL SPACE STATION IN DECEMBER.

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AS ONE OF OUR COMMERCIAL CREW PARTNERS, BOEING IS APPROACHING THE FIRST FLIGHT OF ITS STARLINER

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CREW VEHICLE, WHICH ROLLED OUT TO ITS LAUNCH PAD AT KENNEDY SPACE CENTER ON NOVEMBER 21.

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STARLINER WILL FIRST MAKE AN UNCREWED FLIGHT TO THE SPACE STATION IN DECEMBER AND RETURN

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TO EARTH TO TEST ALL ITS SYSTEMS BEFORE TRANSPORTING ASTRONAUTS NEXT YEAR.

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THE COMMERCIAL CREW PROGRAM WILL ALLOW NASA THE CAPABILITY TO LAUNCH ASTRONAUTS TO THE

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STATION FROM AMERICAN SOIL, THE FIRST FLIGHTS TO DO SO SINCE THE RETIREMENT OF THE SPACE

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SHUTTLE IN 2011.

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THIS WEEK’S QUESTION IS FROM MICHELE’S
YEAR THREE STUDENTS, WHO ASK ABOUT THE SPACE

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STATION’S SPEED AND IF EARTH IS IN VIEW
WHILE ASTRONAUTS ARE OUTSIDE THE HATCH.

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THE SPACE STATION ORBITS EARTH AT AROUND 17,500 MILES PER HOUR, TREATING ASTRONAUTS ON BOARD

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TO ABOUT 16 SUNRISES AND SUNSETS EACH DAY.

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WHEN THOSE ASTRONAUTS GO ON A SPACEWALK, THEY
GET A MAGNIFICENT VIEW OF THE EARTH BELOW,

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AND IF YOU WATCH THE BROADCAST, YOU TOO MIGHT CATCH A GLIMPSE OF OUR HOME PLANET FROM THEIR

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HELMET CAMERA.