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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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iss i'm dan hewitt

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robotics controllers in houston removed

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two payloads from the external trunk the

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dragon cargo craft this week first up

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was the high definition earth viewing or

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hdev camera system which was attached to

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the outside of the station and is

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already providing hd views of the earth

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that are available online

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next was the opals payload which will

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test using lasers to transmit stronger

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signals with more data from space down

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to the ground

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this week in station science commander

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koichi wakata worked on an experiment

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that hopes to help solve a key space

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health issue muscle atrophy

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i am focusing and working on the

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experiment called the cell

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mechanosensing which is an investigation

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to identify

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gravity sensor in muscle cells

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and this study will help develop a new

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medicine or counter measures to muscle

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atrophy the results could also help out

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those on the ground with similar

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symptoms like patients after surgery or

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people with forms of muscular dystrophy

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this week nick asks do astronauts have

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to worry about getting sunburns while

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looking out the windows actually yes

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astronauts do have to watch out for

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sunburns most of the windows like those

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in the cupola have a uv protective

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coating but there are a handful that

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don't when using these windows the crew

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is encouraged to wear sunscreen even

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sunglasses

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star wars day may the fourth is right

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around the corner and the excitement

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isn't just here on earth astronaut rick

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mastracchio sent down a message from the

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iss but he did need a little help first

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looks like we're having some

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looks like we're back now to everyone on

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earth from the international space

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station may the 4th be with you

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to check out the may the 4th events

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happening at a nasa visitor center in

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your area go to visitnasa.com

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make sure to keep sending us your

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questions and comments using the hashtag

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spacetoground