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houston station on space to ground

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energized

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welcome to space to ground i'm gary

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jordan it takes a lot of energy every

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day to be an astronaut performing

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complex science experiments and

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maintenance tasks working out two and a

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half hours all while on a packed

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timeline one study is making sure

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astronauts have the energy needed to do

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it all

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tokyo onishi completed the 11 day

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experiment called energy this past

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sunday throughout that time onishi was

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logging his food intake each day while

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occasionally collecting biological

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samples and measuring oxygen uptake

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the energy study makes sure that through

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long stays in space and rigorous

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exercise astronauts will have the right

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amounts of the right types of food for

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even longer space flights like on the

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journey to mars

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astronauts near the end of their turn

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conducting the fluid shifts experiment

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with a round of testing called dilution

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measures

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kate rubins and takuya onishi began a

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series of tests for the fluid shifts

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experiment scheduled during the home

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stretch of the astronaut stay on the iss

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before returning to earth

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dilution measures include collecting

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biological samples ultrasound scans eye

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exams and more over several days

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the ongoing fluid shifts experiment

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investigates potential causes of

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pressure in the head and vision changes

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during long space flights

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this week's question comes from jq who's

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asking if there is a plan to add modules

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to the iss and achieve a full circle

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there used to be plans like this before

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the station was built and we've since

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moved on from those concepts but that

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doesn't mean we're done adding modules

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many of nasa's early designs for a space

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station were full circles one concept

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from here at the johnson space center

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called the race track featured parallel

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modules connected at the ends over time

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designs and plans changed into what is

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now the linear layout of the

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international space station and new

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elements are still being affixed

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this year beam was added to test

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expandable module technology and the

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international docking adapter was

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installed for future commercial crew

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vehicles to dock to nasa recently

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announced the opportunity for private

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companies to add their own modules to

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the iss in an effort to expand the

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commercial space business

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keep sending us your questions using the