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"HOUSTON, STATION
ON SPACE TO GROUND."

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WELCOME TO SPACE TO
GROUND, I'M ISIDRO REYNA.

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THIS WEEK THREE NEW
CREW MEMBERS LAUNCHED

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TO THE INTERNATIONAL
SPACE STATION.

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THE NEW CREW IS ADJUSTING
TO LIFE ON STATION

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AFTER A SUCCESSFUL
LAUNCH AND DOCKING

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OF THEIR SOYUZ SPACECRAFT.

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THE SOYUZ SPACECRAFT CARRYING
NICK HAGUE AND CHRISTINA KOCH

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OF NASA AND ALEXEY OVCHININ
OF ROSCOSMOS LAUNCHED

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ON THURSDAY MARCH 14 FROM
THE BAIKONUR COSMODROME

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IN KAZAKHSTAN.

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HAGUE, KOCH AND OVCHININ DOCKED

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TO THE SPACE STATION'S RASSVET
MODULE AFTER A FOUR-ORBIT,

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SIX-HOUR JOURNEY, AND OPENED
THE HATCH ABOUT TWO HOURS LATER.

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THE ARRIVAL OF HAGUE, KOCH

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AND OVCHININ RESTORES THE
STATION'S CREW COMPLEMENT

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TO SIX.

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THEY HAVE JOINED ANNE MCCLAIN
OF NASA, DAVID SAINT-JACQUES

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OF THE CANADIAN SPACE AGENCY

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AND EXPEDITION 59 COMMANDER
OLEG KONENENKO OF ROSCOSMOS.

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THE CREW MEMBERS WILL SPEND
MORE THAN SIX MONTHS CONDUCTING

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ABOUT 250 SCIENCE INVESTIGATIONS
IN FIELDS SUCH AS BIOLOGY,

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EARTH SCIENCE, HUMAN
RESEARCH, PHYSICAL SCIENCES

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AND TECHNOLOGY DEVELOPMENT.

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THIS WEEK'S QUESTION COMES
FROM HENNING WHO WANTS

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TO KNOW WHY SPACESUITS
HAVE SUCH LOW PRESSURE.

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GREAT QUESTION HENNING -
IT HAS TO DO WITH MOBILITY.

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THE SPACE STATION IS PRESSURIZED
TO 14.7 POUNDS PER SQUARE INCH,

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PRETTY MUCH WHAT YOU
WOULD FIND HERE ON EARTH.

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IT'S COMFORTABLE AND YOU CAN
KEEP THE SPACE STATION AIR

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IN A MIXED NITROGEN-OXYGEN
ENVIRONMENT.

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AGAIN, VERY MUCH LIKE ON EARTH.

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U.S. SPACESUITS, THOUGH,
ARE PRESSURIZED CLOSER

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TO 4.3 POUNDS PER SQUARE INCH.

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ASTRONAUTS HAVE TO SPEND A
LOT OF TIME PRE-BREATHING

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AND PURGING NITROGEN
FROM THEIR BLOOD STREAM

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TO MAINTAIN A 100%
OXYGEN ENVIRONMENT,

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BUT THE LOW PRESSURE ALLOWS THE
SUIT TO BE A LOT MORE FLEXIBLE,

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WHICH IS MUCH NEEDED WHEN
YOU HAVE TO SPEND SIX

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AND A HALF HOURS FLEXING
RIGID SPACE GLOVES TO DO WORK

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ON THE OUTSIDE OF
THE SPACE STATION.