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"HOUSTON, STATION
ON SPACE TO GROUND."

2
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WELCOME TO SPACE TO
GROUND, I'M ISIDRO REYNA.

3
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THE SCIENCE CONTINUES ABOARD
THE INTERNATIONAL SPACE STATION.

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THIS WEEK, THE CREW MADE
PREPARATIONS FOR THE ARRIVAL

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OF ASTROBEE, A SELF-CONTAINED,
FREE FLYING ROBOT

6
00:00:17,696 --> 00:00:20,786
THAT WILL BE FLYING AROUND THE
STATION ALONGSIDE ASTRONAUTS

7
00:00:20,786 --> 00:00:21,586
LATER THIS YEAR.

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ASTROBEE WILL HELP SCIENTISTS
AND ENGINEERS DEVELOP

9
00:00:24,916 --> 00:00:27,236
AND TEST TECHNOLOGIES
FOR USE IN ZERO-GRAVITY;

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HELP THE ASTRONAUTS DO
THEIR ROUTINE CHORES;

11
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AND GIVE FLIGHT CONTROLLERS
IN HOUSTON ADDITIONAL EYES

12
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AND EARS ON THE STATION.

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THE AUTONOMOUS ROBOT,
POWERED BY FANS

14
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AND VISION-BASED NAVIGATION,
WILL PERFORM CREW MONITORING,

15
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SAMPLING, LOGISTICS
MANAGEMENT, AND ACCOMMODATE

16
00:00:42,496 --> 00:00:43,896
UP TO THREE INVESTIGATIONS.

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ASTROBEE BUILDS ON THE
SUCCESS OF SPHERES,

18
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NASA'S FIRST GENERATION
FREE-FLYER NOW ABOARD

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THE STATION.

20
00:00:51,306 --> 00:00:54,226
LIFE IN MICROGRAVITY REPRODUCES
MANY EFFECTS ENCOUNTERED

21
00:00:54,226 --> 00:00:57,156
ON EARTH BY PEOPLE
DURING PROLONGED BED STAYS

22
00:00:57,236 --> 00:01:00,866
IN INTENSIVE CARE, PERSONS WITH
REDUCED MOBILITY OR WITH AGING.

23
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A BETTER UNDERSTANDING OF THE
RELATIONSHIP BETWEEN FAT CELLS

24
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AND BLOOD-PRODUCING CELLS
IN THE BONE MARROW IS KEY

25
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TO MINIMIZE THE IMPACT

26
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OF DECREASED ACTIVITY
IN OUR SOCIETY.

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ASTRONAUTS ON STATION WORKED
ON THE MARROW INVESTIGATION,

28
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WHICH LOOKS AT THE EFFECT OF
MICROGRAVITY ON THE BONE MARROW.

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IT IS BELIEVED THAT
MICROGRAVITY,

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LIKE LONG-DURATION BED REST ON
EARTH, HAS A NEGATIVE EFFECT

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ON THE BONE MARROW
AND THE BLOOD CELLS

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THAT ARE PRODUCED
IN THE BONE MARROW.

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THE EXTENT OF THIS EFFECT, AND
ITS RECOVERY, ARE OF INTEREST

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TO SPACE RESEARCH AND
HEALTHCARE PROVIDERS ON EARTH.

35
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THE WEEK'S QUESTION
COMES FROM CAITLYN

36
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OF RJO INTERMEDIATE SCHOOL.

37
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SHE WANTS TO KNOW
WHAT'S THE LONGEST AMOUNT

38
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OF TIME AN ASTRONAUT OR
COSMONAUT HAS SPENT IN SPACE.

39
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WELL, THAT'S A GREAT
QUESTION, CAITLYN.

40
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WE'LL HAVE TO TAKE A LOOK
BACK INTO OUR ARCHIVES.

41
00:01:45,116 --> 00:01:49,416
THE RUSSIAN SPACE STATION MIR
ENDURED 15 YEARS IN ORBIT,

42
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THREE TIMES ITS PLANNED
LIFETIME.

43
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IT HOSTED SCORES OF CREWMEMBERS
INCLUDING PHYSICIAN VALERI

44
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POLYAKOV, WHO LIVED
ABOARD MIR FOR A SINGLE,

45
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CONTINUOUS-ORBIT
STAY OF 438 DAYS.

46
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HE COMPLETED HIS STAY IN 1995.

47
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IN COMPARISON, AND MOST
RECENTLY, RETIRED NASA ASTRONAUT

48
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AND EXPEDITION 46
COMMANDER SCOTT KELLY

49
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AND HIS RUSSIAN COUNTERPART
MIKHAIL KORNIENKO SPENT 340-DAYS

50
00:02:14,486 --> 00:02:15,946
ABOARD THE INTERNATIONAL
SPACE STATION.

51
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THEY COMPLETED THEIR
MISSION IN 2016.

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KEEP SENDING IN YOUR QUESTIONS
USING THE HASHTAG SPACE