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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 dan

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hewitt it was a bit of spring training

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for all six crew members on board this

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week they took part in an emergency

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simulation with mission control in

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houston and in moscow the crew rehearsed

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where to shelter if the station ever

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goes through a rapid depressurization

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event and terry virts and samantha chris

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ferretti got some practice time in with

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canada arm 2 the station's robotic arm

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which they'll use to reach out and grab

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the spacex dragon cargo ship set to

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launch next week

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did you know there's an entire

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population of microbes living inside and

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outside your body well there is and

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these tiny organisms can have a big

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effect on your health the microbiome

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experiment is one of the focuses of the

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one year mission and it studies how the

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balance of microbes in a crew member's

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body changes when living in space these

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minute creatures play an important role

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in how our bodies function from helping

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us absorb nutrients to altering how well

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our immune system works studying changes

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in their behavior can help us prepare

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future astronauts for working in the

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extreme environment of space

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this week brian wants to know what one

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item or area of earth astronauts are

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most drawn to well one spectacle that

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was a favorite of canadian astronaut

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chris hadfield and is a recent fixation

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for current commander terry virts is

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thunderstorms many astronauts that have

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spent a few months staring at earth have

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talked about how remarkable the

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lightning inside of storms and the cloud

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formations themselves look from orbit in

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fact terry verts recently shared a

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series of storms he captured even

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getting some mind-blowing images from

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typhoon maysack

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make sure to keep sending your questions