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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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A SPACECRAFT CARRYING
NEW SCIENCE EXPERIMENTS,

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CREW SUPPLIES AND
HARDWARE IS ON ITS WAY

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TO THE INTERNATIONAL
SPACE STATION.

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THE SPACEX FALCON 9 ROCKET LIT
UP THE SKY AS IT BLASTED OFF

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FOR A THREE-DAY EARTH ORBIT,

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MARKING SPACEX'S 15TH
COMMERCIAL RESUPPLY MISSION.

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THE SPACEX DRAGON
WILL RENDEZVOUS

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WITH THE SPACE STATION
ON MONDAY, JULY 2,

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WHEN NASA ASTRONAUT RICKY
ARNOLD WILL USE THE CANADARM2

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TO GRAPPLE THE SPACECRAFT
IN PREPARATION

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FOR REMOTE INSTALLATION
BY THE GROUND CREW.

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THE DRAGON SPACECRAFT, LOADED
WITH NEARLY 6,000 POUNDS

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OF SUPPLIES AND EXPERIMENTS,
WILL REMAIN AT THE SPACE STATION

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FOR 32 DAYS BEFORE UNDOCKING
AND RETURNING TO EARTH,

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BRINGING COMPLETED EXPERIMENTS
ALONG FOR FURTHER ANALYSIS.

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THANKS TO THE UPCOMING
ARRIVAL OF THE SPACEX DRAGON,

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THE CREW IS GOING TO
BE VERY BUSY WORKING

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ON THE NEW SCIENCE
EXPERIMENTS IT BRINGS.

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ONE OF THESE EXPERIMENTS
IS THE ECOSTRESS DEVICE,

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WHICH WILL MANAGE THE
TEMPERATURE OF PLANTS

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TO HELP US BETTER UNDERSTAND
HOW MUCH WATER THEY NEED

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AND HOW THEY RESPOND TO STRESS.

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THIS IS CRITICAL AS WE PREPARE
FOR LONG DURATION SPACE MISSIONS

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TO THE MOON OR MARS,
AS ASTRONAUTS WILL NEED

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TO GROW THEIR OWN FOOD
ABOARD THE SPACECRAFT.

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HOWEVER, EXPERIMENTS LIKE
ECOSTRESS HAVE APPLICATIONS

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TO LIFE ON THE GROUND, TOO.

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ECOSYSTEM PRODUCTIVITY IS
THREATENED BY WATER STRESS,

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WHICH ECOSTRESS CAN
HELP DETECT AND ANALYZE.

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THIS MAY HELP INFORM
FUTURE AGRICULTURAL PLANS

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AND WATER RESOURCE
MANAGEMENT ON EARTH.

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THIS WEEK'S QUESTION COMES
FROM MONIKA, WHO WANTS TO KNOW

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IF ASTRONAUTS EXPERIENCE
VERTIGO WHILE IN ORBIT.

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UPON THEIR ARRIVAL
TO THE SPACE STATION,

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SOME ASTRONAUTS DO
EXPERIENCE "SPACE SICKNESS,"

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WHICH INCLUDES SYMPTOMS
LIKE VERTIGO,

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MILD HEADACHES AND NAUSEA.

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SPACE SICKNESS OCCURS AS
THE BODY TRIES TO ACCLIMATE

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TO A MICROGRAVITY ENVIRONMENT.

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SENSORS IN THE INNER
EAR, WHICH ARE PART

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OF THE BODY'S VESTIBULAR SYSTEM,

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CAN SENSE THE PULL
OF GRAVITY ON EARTH.

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IN SPACE, HOWEVER, THE BODY MUST
ADJUST TO THE LACK OF GRAVITY.

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THERE IS NO UP OR DOWN!

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THIS CONFUSES THE
BRAIN, BUT FORTUNATELY,

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MOST ASTRONAUTS ADAPT
RATHER QUICKLY.

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KEEP SENDING IN YOUR QUESTIONS
USING THE HASHTAG SPACETOGROUND.

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WE'LL SEE YOU NEXT WEEK.