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"HOUSTON, STATION
ON SPACE TO GROUND."

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SPLASH DOWN IN THE
PACIFIC OCEAN!

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00:00:06,486 --> 00:00:08,776
WELCOME TO SPACE TO
GROUND, I'M ISIDRO REYNA.

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SPACE X'S DRAGON SPLASHED DOWN
ON MARCH 19, MARKING THE END

5
00:00:13,206 --> 00:00:14,876
TO ITS TENTH RESUPPLY MISSION.

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MORE THAN FIFTY-FOUR HUNDRED
POUNDS OF CARGO, SCIENCE

7
00:00:18,656 --> 00:00:21,346
AND TECHNOLOGY DEMONSTRATION
SAMPLES MADE IT BACK TO EARTH

8
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ON DRAGON, WITH THE MAJORITY
BOUND FOR LABORATORIES

9
00:00:23,956 --> 00:00:25,296
AROUND THE GLOBE FOR ANALYSIS.

10
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ONE PAYLOAD, THE
MICROGRAVITY EXPANDED STEM CELLS

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INVESTIGATION, HAD CREW
MEMBERS OBSERVE CELL GROWTH

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AND OTHER CHARACTERISTICS
IN MICROGRAVITY.

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THE RESULTS FROM THIS
INVESTIGATION COULD LEAD

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TO THE TREATMENT OF
DISEASE AND INJURY IN SPACE,

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AS WELL AS PROVIDE A WAY TO
IMPROVE STEM CELL PRODUCTION

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FOR HUMAN THERAPY ON EARTH.

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THIS WEEK, ASTRONAUTS ONBOARD
THE STATION CONDUCTED THE FIRST

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OF THREE SCHUDULE SPACEWALKS.

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EXPEDITION 50 COMMANDER
SHANE KIMBROUGH

20
00:00:52,926 --> 00:00:56,126
AND FLIGHT ENGINEER THOMAS
PESQUET DISCONNECTED CABLES

21
00:00:56,266 --> 00:00:57,436
AND ELECTRICAL CONNECTIONS

22
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ON THE PRESSURIZED
MATING ADAPTER-3.

23
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THIS WILL PREPARE
THE MATING ADAPTER

24
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FOR ITS ROBOTIC MOVE MARCH 26,
LEADING THE WAY FOR INSTALLATION

25
00:01:05,456 --> 00:01:07,716
OF THE SECOND INTERNATIONAL
DOCKING ADAPTER.

26
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THE ADAPTER WILL BE
USED FOR THE ARRIVAL

27
00:01:09,846 --> 00:01:11,586
OF COMMERCIAL CREW
VEHICLES IN THE FUTURE.

28
00:01:12,126 --> 00:01:15,486
THE SPACEWALKERS INSTALLED A
NEW COMPUTER RELAY BOX EQUIPPED

29
00:01:15,486 --> 00:01:17,226
WITH ADVANCED SOFTWARE
FOR THE ADAPTER.

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THEY ALSO LUBRICATED THE
LATCHING END EFFECTOR

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ON THE DEXTRE ROBOTIC ARM,

32
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INSPECTED A RADIATOR
VALVE SUSPECTED

33
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OF A SMALL AMMONIA LEAK
AND REPLACED CAMERAS

34
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ON THE JAPANESE SEGMENT
OF THE OUTPOST.

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THIS WAS THE 198TH
SPACEWALK IN SUPPORT

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OF SPACE STATION
ASSEMBLY AND MAINTENANCE.

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OUR TWITTER QUESTION THIS WEEK
COMES FROM @ SAM I AM SCIENCE.

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HE WANTED TO KNOW WHAT A
TORNADO LOOKS LIKE FROM SPACE.

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WELL, TORNADOES LOOK
LIKE A VARIETY

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OF THUNDERSTORMS FROM SPACE.

41
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CREW MEMBERS

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ON THE INTERNATIONAL SPACE
STATION PHOTOGRAPH THE EARTH

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FROM THEIR UNIQUE POINT OF VIEW.

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PHOTOGRAPHS RECORD HOW THE
PLANET IS CHANGING OVER TIME,

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FROM HUMAN-CAUSED
CHANGES LIKE URBAN GROWTH

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AND RESERVOIR CONSTRUCTION,
TO NATURAL DYNAMIC EVENTS

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SUCH AS HURRICANES, FLOODS
AND VOLCANIC ERUPTIONS.

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YOU CAN VISIT OUR GATEWAY TO
ASTRONAUT PHOTOGRAPHY PAGE

49
00:02:04,286 --> 00:02:06,926
TO VIEW THESE STUNNING IMAGES.

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KEEP SENDING YOUR
QUESTIONS USING THE HASHTAG