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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 2015 is drawing to an end and

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what a year it's been for science and

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space

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crew members spent a whopping 1900 hours

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this year working on 450 experiments on

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the orbital laboratory highlights how

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about growing and eating lettuce for the

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first time in space is part of the

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veggie experiment something that not

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only brings a welcome taste of home to

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station cruise but will be a vital

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technology on a future journey to mars

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this is also a hallmark year for human

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research in space with several

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investigations focused on the first

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one-year mission

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nasa's scott kelly and rose cosmos

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mikhail kornienko are at the center of a

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number of experiments pushing the

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boundaries on what we know about how

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humans live in space for extreme periods

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of time

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and to keep everything running there

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were plenty of launches spacewalks and

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more

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eight cargo vehicles carried supplies to

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the station in 2015 including two spacex

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dragons one orbital atk cygnus four

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russian progresses and a japanese htv

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four soyuz crafts launched crews to the

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station including the first kozak danish

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and british crew members

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seven spacewalks also took place

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upgrading the station and performing

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repairs to keep it in tip-top shape and

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in november the space station celebrated

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15 non-stop years of humans living and

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working off the earth for the earth

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as exciting as 2015 was for the station

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2016 is already shaping up to be an

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extraordinary year the one-year crew is

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set to return march first wrapping up

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340 days in space the longest duration

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mission ever in iss history and some

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major science payloads plan on making

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the station their home in 2016. the

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bigelow expandable activity module or

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beam is a lightweight inflatable habitat

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that will demonstrate a new way to

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provide a comfortable area for

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astronauts to live and work an

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innovative technology to help drive

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exploration

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and to keep an eye on the earth below

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the sage 3 device will fly next year to

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monitor aerosols the ozone layer and

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other gases vital for improved

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understanding of climate change

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and so we'll close this year with a

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special message from the crew for the

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holidays keep sending those questions in

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2016 using the hashtag space to ground

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we'll see you next year

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christmas is traditionally a time for

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friends and families to get together and

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although we can't be with our friends

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and families this year we'll be orbiting

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the earth 16 times on christmas day and

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sending all our good wishes to everybody

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back down on our beautiful planet earth

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merry christmas happy holidays and happy