WEBVTT

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[upbeat music]

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- "OUR WORLD."

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- HEY, EVERYBODY.

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I'M LILY,
AND THIS IS "OUR WORLD."

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I JUST GOT BACK
FROM PLAYING WITH MY FRIENDS,

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AND BOY,
DID I HAVE A GOOD TIME.

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BUT NOW I HAVE TO FINISH
MY CHORES AROUND THE HOUSE.

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WHEN I'M CLEANING UP MY ROOM

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AND PUTTING EVERYTHING BACK
IN ITS PLACE,

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I LIKE TO PRETEND
THAT I'M PUTTING TOGETHER

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PIECES OF THE INTERNATIONAL
SPACE STATION,

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OR WHEN I'M PICKING UP TRASH
FROM AROUND THE HOUSE,

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I'M CLEANING UP TRASH
FROM OUTSIDE THE I.S.S.,

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OR WHEN I'M VACUUMING,

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I'M DOING SOME KIND OF
COOL SCIENCE RESEARCH.

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WHOA!

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BUT TO DO MANY OF THOSE THINGS
IN SPACE,

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I WOULD HAVE TO DO
A SPACEWALK.

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A SPACEWALK IS WHEN ASTRONAUTS

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GO OUTSIDE THEIR SPACECRAFT
TO WORK OR EXPLORE.

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AND WHEN ASTRONAUTS
GO ON THEIR SPACEWALKS,

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THEY HAVE TO BRING
ALL THEIR TOOLS WITH THEM.

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HERE, LET'S WATCH THIS VIDEO
I RECORDED FROM NASA TV.

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THIS IS ASTRONAUT SANDY MAGNUS,

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TALKING ABOUT TOOLS
ASTRONAUTS USE.

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- WELL, WE'VE GOT THESE PEOPLE,

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AND THEY'RE IN
THEIR SPACE SUITS,

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THEIR ONE-PERSON SPACESHIPS.

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AND THEY NEED THEIR TOOLS.

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HOW ARE WE GONNA HAVE THEM
CARRY THEIR TOOLS?

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'CAUSE YOU CAN'T REALLY CARRY
THEM IN YOUR HANDS

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'CAUSE OUR HANDS
ARE KIND OF OUR FEET UP HERE.

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WE USE THEM TO MOVE AROUND IN.

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AND SO IT TURNS OUT
THAT THEY BUILT A SYSTEM

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THAT ATTACHES TO THE FRONT
OF THE SPACE SUIT RIGHT HERE,

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AND IT HAS ALL OF OUR TOOLS.

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AND IT LOOKS SOMETHING
LIKE THIS.

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AND IT GOES ABOUT RIGHT HERE.

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AS YOU CAN SEE,
IT'S VERY, VERY BIG,

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AND THERE'S LOTS OF STUFF
ON HERE.

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WE'VE GOT A DRILL, OR WE CALL IT
A PISTOL-GRIP TOOL.

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IT'S LIKE A SCREWDRIVER
WITH A BATTERY,

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SO YOU CAN UNFASTEN BOLTS
QUICKLY.

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AND EVERYTHING'S TETHERED.

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- DO YOU KNOW
WHAT A TETHER IS?

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I DIDN'T EITHER,
SO I LOOKED IT UP.

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BASICALLY, IT'S SOMETHING
THAT HELPS HOLD SOMETHING ELSE

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IN PLACE.

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SO IT'S LIKE THIS BIG KEYCHAIN.

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YOU CAN HOOK IT TO PLACES
LIKE A BELT,

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AND THE KEYS
WON'T GET AWAY FROM YOU,

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JUST LIKE THE TETHERS
THE ASTRONAUTS USE

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KEEP THEIR TOOLS
RIGHT WHERE THEY NEED THEM.

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- WE TAKE EXTRA TETHERS
SO THAT WE CAN PICK UP THINGS

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AND ATTACH THEM TO US.

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WE HAVE A TRASH BAG,

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'CAUSE YOU CAN'T JUST
THROW THINGS INTO--

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YOU KNOW,
INTO THE VACUUM OF SPACE.

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YOU HAVE TO BRING IT ALL INSIDE
THE THROW IT IN.

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- ANOTHER CHORE I HAVE TO DO
SOMETIMES

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IS TO PICK UP STICKS AND TRASH
IN THE YARD.

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BUT I ALWAYS MAKE SURE
I HAVE ON GLOVES

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SO I DON'T HURT MYSELF
ON A SHARP STICK

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AND TO KEEP MY HANDS
NICE AND WARM.

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ASTRONAUTS WEAR GLOVES TOO,

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BUT THEY'RE A LITTLE BIT
DIFFERENT THAN MINE.

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- AND THE ENGINEERS
HAD TO THINK ABOUT THIS,

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IS HOW TO DESIGN
A PAIR OF GLOVES

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THAT WILL PROTECT YOU
BUT YET BE THIN ENOUGH

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THAT YOU CAN FEEL
WHAT YOU'RE DOING.

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AND IT TURNS OUT THAT GLOVES

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WERE ONE OF THE TRICKIEST THINGS
TO DESIGN,

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PRIMARILY BECAUSE THEY WERE
SO IMPORTANT,

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BUT IF YOU'VE EVER LOOKED
AT YOUR HAND

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AND REALLY THOUGHT ABOUT
HOW YOUR FINGERS MOVE

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AND ALL THE BONES AND MUSCLES

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AND THE COMPLEXITY
OF A HUMAN HAND,

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IT'S REALLY HARD TO RE-CREATE
THAT IN AN ENGINEERING WORLD.

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AND SO THE GLOVES ENDED UP
BEING THE HARDEST THING

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TO CREATE.

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AS YOU CAN SEE,

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THE GLOVE HAS A LITTLE BIT
DIFFERENT MATERIAL ON THE HAND,

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AND THAT'S SO THAT WE CAN GET
A LITTLE BIT OF A TACTILE FEEL

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WHEN WE'RE WEARING THE GLOVES.

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- TACTILE?

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HEY, MOM,
WHAT DOES TACTILE MEAN?

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- TACTILE HAS TO DO
WITH THE SENSE OF TOUCH, LILY.

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- OH.

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SO I GUESS THAT MEANS
THE ASTRONAUTS

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CAN SORT OF FEEL
WHATEVER THEY'RE WORKING ON

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THROUGH THEIR GLOVES.

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THAT COULD MAKE THINGS EASIER.

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- THEY'RE A LITTLE BIT THINNER.

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BUT THEY STILL HAVE
ALL OF THE PROTECTION ON THEM

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THAT THEY NEED TO PROTECT US
FROM THE VACUUM OF SPACE

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AS WELL AS TEMPERATURES.

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THEY PUT SPECIAL HEATERS
IN THERE TO PROTECT OUR FINGERS.

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I KNOW--I DON'T KNOW
ABOUT YOU GUYS,

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BUT I ALWAYS GET COLD HANDS,

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SO I'M GLAD THERE ARE
SPECIAL HEATERS IN HERE.

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AND THEY CAN BE SIZED--

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THEY ACTUALLY TOOK A MOLD
OF MY HAND TO MAKE MY GLOVES.

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IT WAS KIND OF A FUN EXPERIENCE.

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THEY TOOK MY HAND
AND THEY PUT IT IN SOME GOOP

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AND MADE A THREE-DIMENSIONAL
MOLD OF MY HAND

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AND THEN DID A BUNCH OF
MEASUREMENTS OF ALL MY FINGERS,

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AND THEN THEY CUSTOM-MADE
THE GLOVE

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SO THAT IT FIT MY HAND.

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AND THAT'S REALLY HOW IMPORTANT
IT IS

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TO HAVE A GOOD PAIR OF GLOVES.

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- SO WHAT DID WE LEARN TODAY?

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WE LEARNED THAT ASTRONAUTS
USE TOOLS TO DO WORK

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OUTSIDE THE INTERNATIONAL SPACE
STATION.

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WE LEARNED HOW ASTRONAUTS KEEP
THEIR TOOLS FROM FLOATING AWAY

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INTO SPACE.

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AND WE LEARNED
ABOUT HOW IMPORTANT GLOVES ARE

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FOR ASTRONAUTS.

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SPEAKING OF GLOVES,
I WANT TO MAKE SOME OF MY OWN.

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SEE YOU NEXT TIME
ON "OUR WORLD."

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HEY, MOM,
DO WE HAVE ANY GOOP?

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- "OUR WORLD."