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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 full house this week on

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the station and one of the cast members

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is even a twin

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nine crew members from five different

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countries packed the orbital laboratory

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this week working fast and furious on a

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range of different projects including

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in-depth research on muscle loss

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readying small satellites to be deployed

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conducting earth observations and even

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driving rovers on earth from a control

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panel in space but it's back home on

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friday september 11th for the visiting

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crew members andreas mogensen and idean

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avatar along with cosmonaut gennady

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padalka who's now spent a total of 879

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days in space more than any other human

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in history and scott kelly who is just

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about midway through his year-long

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mission took the reins as commander of

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the international space station

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kelly took command back on september 5th

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and will keep the job until he comes

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home in march of 2016. i'm ready to link

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and i assume command of the

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international space station a

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a great ship and one that not only

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serves us very well but serves our

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various countries well this week we have

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a twitter question from mariana who

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wants to know why it sometimes only

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takes a few hours as opposed to days for

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crews to reach the station well it's all

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about being in the right place at the

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right time

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in order for a soyuz to be able to

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complete its trip in only four earth

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orbits the station has to be at just the

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right altitude at the time of liftoff

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for the most recent launch the station

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was a bit higher than needed due to

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solar weather conditions the atmosphere

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wasn't thick enough to cause sufficient

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drag to lower the station's altitude to

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the expected range so that spacecraft

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took the longer 34-orbit two-day

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rendezvous route make sure to keep

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sending us your questions and comments