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houston station on space to ground

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welcome to space to ground your weekly

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look at what's happening on board the

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international space station i'm crawford

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jones after over three thousand trips

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around the earth and an extended stay on

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orbit three space travelers are back

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home on thursday nasa astronaut terry

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verts cosmonaut anton shkaplerov and

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european space agency astronaut samantha

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chris ferretti departed the space

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station after 199 days on board their

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soyuz spacecraft undocked from the

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station at 6 20 a.m eastern time for a

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touchdown on the step of kazakhstan just

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under three and a half hours later the

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crew members were extracted from the

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spacecraft by search and recovery teams

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and given a few moments to adjust to

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earth's gravity before leaving the

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landing site for the last leg of their

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journey home

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with her 199 days in space samantha

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christopher reddy broke the record for

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longest space flight by a woman

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previously held by nasa's sunny williams

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the departure of verts shkaplerov and

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christopher reddy kicked off iss

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expedition 44. before leaving verts

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handed over command of the orbital

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outpost to veteran cosmonaut gennady

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padalka marking the beginning of his

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fourth stint as station commander and

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iss record remaining with padalka are

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his fellow cosmonaut mikhail kornienko

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and nasa astronaut scott kelly who are

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coming up on the three-month mark of

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their one-year mission the trio will be

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joined by cosmonaut oleg kononenko

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japanese astronaut kamiya yui and nasa

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astronaut cho lindgren in late july to

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complete the six-man expedition 44 crew

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this week's twitter question comes from

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alexa who wants to know what's the

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largest scientific device on the iss's

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well alexa that would be the ams or the

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alpha magnetic spectrometer the

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state-of-the-art particle physics

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detector was delivered to the station by

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space shuttle endeavour in 2011 and has

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measured over 65 billion cosmic rays

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since on its quest to help us discover

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the origins of the universe

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keep sending us your questions and