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"HOUSTON, STATION
ON SPACE TO GROUND."

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

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THIS WEEK, ASTRONAUTS INSIDE
THE SPACE STATION PREPARED AN

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EXTERNAL EXPERIMENT THAT
WILL TEST THE ABILITY

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TO STORE FUEL FOR
FUTURE MISSIONS.

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NASA ASTRONAUT ANNE MCCLAIN

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AND CANADIAN SPACE AGENCY
ASTRONAUT DAVID SAINT-JACQUES

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PREPARED THE ROBOTIC
REFUELING MISSION-3, OR RRM-3,

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FOR ITS TRANSFER OUTSIDE
THROUGH THE AIRLOCK

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IN THE JAPANESE EXPERIMENT
MODULE.

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RRM-3 DEMONSTRATES THE FIRST
TRANSFER AND LONG TERM STORAGE

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OF LIQUID METHANE, A CRYOGENIC
FLUID, IN MICROGRAVITY.

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SPACECRAFT USE CRYOGENIC FLUIDS
AS PROPELLANTS OR COOLANTS

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AND BEING ABLE TO REFUEL WHILE
IN SPACE WILL BE A HUGE BOOST

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TO ENABLING LONG DURATION
MISSIONS TO FUTURE DESTINATIONS,

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LIKE THE MOON OR MARS.

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A SUIT CAN MAKE ANYONE LOOK
THEIR BEST, BUT IT'S CRITICAL

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FOR ASTRONAUTS THAT THEIR
SPACE SUITS WORK THEIR BEST.

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SPACE SUITS REQUIRE ROUTINE
MAINTENANCE TO ENSURE THEY ARE

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IN PROPER CONDITION BEFORE
AN ASTRONAUT VENTURES OUTSIDE

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ON A SPACEWALK.

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SPACE SUITS ARE LIKE INDIVIDUAL,
HUMAN-SIZED SPACECRAFT,

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EACH CONTAINING ITS OWN
PORTABLE LIFE SUPPORT SYSTEM.

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THIS INCLUDES THE FAN PUMP
SEPARATOR, WHICH CIRCULATES AIR

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THROUGH THE OXYGEN
VENTILATION CIRCUIT

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AND TRANSPORTS THE
SUIT'S COOLANT FLUID.

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ASTRONAUTS ANNE MCCLAIN

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AND DAVID SAINT-JACQUES REMOVED
ONE SUIT'S FAN PUMP SEPARATOR

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AND REPLACED IT WITH AN ON-ORBIT
SPARE, THEN PRESSURIZED THE SUIT

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TO CONDUCT A LEAK CHECK.

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THIS WEEK'S QUESTION COMES FROM
FIFTH GRADER OLIVER WHO WANTS

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TO KNOW IF THERE IS
INTERNET IN SPACE.

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IN FACT, THE "WORLD WIDE
WEB" EXTENDS BEYOND THE WORLD

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AND INTO SPACE, AS WELL.

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ASTRONAUTS HAVE ACCESS TO
WHAT WE CALL "CREW NET,"

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INTERNET AVAILABLE ON TABLETS
ABOARD THE INTERNATIONAL

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SPACE STATION.

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CREW MEMBERS ARE
ABLE TO SEND EMAILS

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AND MANY EVEN HAVE
SOCIAL MEDIA ACCOUNTS.

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YOU CAN FOLLOW NASA ASTRONAUT
ANNE MCCLAIN ON TWITTER

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AT @ASTROANNIMAL, AND CANADIAN
SPACE AGENCY ASTRONAUT DAVID

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SAINT-JACQUES AT @ASTRO_DAVIDS.