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HOUSTON STATION ON SPACE TO GROUND

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WELCOME TO SPACE TO GROUND, I AM KAYLA 
LAFRANCE. THIS WEEK THE CREW IS PREPARING FOR  

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A HOLIDAY DELIVERY AND DREAMING OF SUGAR PLUMS.
CARGO DRAGON IS IN THE FINAL PREPARATIONS FOR ITS  

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TARGETED LAUNCH AT 5:06 A.M. EASTERN ON DECEMBER 
21ST. THIS IS SPACEX’s 24TH CARGO MISSION.

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SET TO LAUNCH ON A FALCON 9 FROM LAUNCH 
COMPLEX 39A AT NASA’S KENNEDY SPACE CENTER  

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IN FLORIDA. AFTER REACHING ORBIT, THE CARGO DRAGON 
WILL THEN DOCK WITH THE STATION THE FOLLOWING DAY  

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AT 4:30 AM EASTERN.
   

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SPX-24 WILL DELIVER THOUSANDS OF POUNDS 
OF GOODS TO THE STATION, INCLUDING CREW  

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SUPPLIES AND A VARIETY OF NEW SCIENTIFIC 
INVESTIGATIONS. SUCH AS 4 NEW CUBESATS,  

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A NEW PROTEIN CRYSTAL GROWTH STUDY AIMED TO 
IMPROVE THE DELIVERY OF CANCER TREATMENT DRUGS,  

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A HANDHELD BIOPRINTER THAT WILL TEST TECHNOLOGY 
THAT COULD ONE DAY BE USED TO PRINT TISSUE  

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DIRECTLY ON WOUNDS TO ACCELERATE HEALING; AND 
SEVERAL EXPERIMENTS FROM UNIVERSITY STUDENTS  

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AS PART OF THE STUDENT PAYLOAD OPPORTUNITY 
WITH CITIZEN SCIENCE OR (SPOCS) PROGRAM.

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BE SURE TO FOLLOW ALONG ON NASA TV, NASA.GOV, OR 
THE NASA APP AS WE CONTINUE TO FOLLOW THIS MISSION  

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LEADING UP TO OUR FULL LIVE COVERAGE 
OF LAUNCH AND SUBSEQUENT DOCKING.

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MANY OF US DREAM OF WHAT IT WOULD BE LIKE TO 
LIVE IN SPACE. THOUGH VERY FEW OF US GET TO  

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ACTUALLY DREAM IN SPACE. WHILE LIVING ON THE SPACE 
STATION, THE CREW WILL EXPERIENCE SUN RISE AND SUN  

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SET 16 TIMES A DAY, THIS CAN CAUSE DISRUPTIONS 
TO THEIR CIRCADIAN RHYTHM AND ABILITY TO SLEEP.

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THE DREAMS EXPERIMENT AIMS TO STUDY THIS 
CHANGE IN THE ASTRONAUTS SLEEP PATTERNS  

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AND TO EXAM HOW THEIR MINDS AND BODIES 
ADAPT TO SLEEPING IN MICROGRAVITY.

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ESA ASTRONAUT MATTHIAS MAUER, WILL BE THE NEXT 
CREWMEMBER TO PARTICIPATE IN THE DREAM EXPERIMENT.  

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MAUER WILL BE WEARING A SLEEP HEADBAND FOR SEVERAL 
NIGHTS THAT FITTED WITH DRY ELECTRODES AND SENSOR.  

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THE HEADBAND WILL OBSERVE HOW HE ADAPTS AND 
HOW HIS SLEEP PATTERNS CHANGES WHILE IN SPACE.

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THE IMPACT OF MICROGRAVITY ON SLEEP IS A KEY 
CHALLENGE FACING FUTURE LONG-DURATION MISSIONS TO  

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THE MOON AND MARS. THE RESULTS OF DREAMS WILL HELP 
PLAN STRATEGIES TO HELP FUTURE SPACE EXPLORES.

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TODAY’S ASKNASA QUESTION COMES 
FROM GRACE RITTER ON TWITTER  

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WHO ASKED HOW DO ASTRONAUTS KEEP CLEAN IN SPACE?

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THE CREW KEEP CLEAN IN SPACE THE 
SAME WAY WE DO HERE ON EARTH.  

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THEY HAVE DAILY HYGIENE ACTIVITIES TO 
BRUSH THEIR TEETH, COMB THEIR HAIR,  

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AND WASH THEIR HANDS AND FACE. THEY HAVE WEEKLY 
TASKS WHERE THEY BATHE AND WASH THEIR HAIR, AND  

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THEY EVEN GIVE EACH OTHER HAIRCUTS. Thinking 
about a third career in haircutting.

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THE ASTRONAUTS WIPE THEIR BODIES CLEAN 
BY USING A WET TOWEL, AND WASH THEIR  

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HAIR BY USING WATERLESS SHAMPOO. AFTER WASHING, 
THEY’LL USE DRY TOWELS TO DRY THEMSELVES OFF.

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THEY ALSO HAVE TO COMPLETE WEEKLY 
HOUSEKEEPING TASKS ON BOARD THE ISS  

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WHERE THEY VACUUM ALL AIR VENTS AND FILTERS, 
AND SMOKE DETECTORS. THEN THEY DISINFECT  

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AND WIPE DOWN SURFACES THAT ARE FREQUENTLY 
TOUCHED THROUGHOUT THE DAY BY THE CREW.  

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AREAS LIKE HANDHOLDS, THE GALLEY AND ITS 
TABLE.. TYPICALLY, THERE ARE 6 HOURS A  

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WEEK SPENT ON KEEPING THEIR STATION 
HOME AND CLEAN AND SAFE ENVIRONMENT.

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AND THAT’S SPACE TO GROUND FOR THIS WEEK. 
THANKS FOR WATCHING.  WE’LL SEE YOU NEXT WEEK!