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There's hundreds of experiments
we're involved with and I

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like to categorize those
into 3 different categories.

3
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We are the experiment, we the
astronauts are the experiments.

4
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We're doing blood
draws, or urine samples,

5
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or they're doing ultrasounds on
our eyeballs, testing like that.

6
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The second class is
where we are operators.

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We are the operators
and we are talking

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to the principal investigators

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on the planet while we
perform the experiments

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to their specifications.

11
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Ants in space was a
lot of fun for the kids

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and for the scientists.

13
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The third kind of
experiments are the ones

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where we maintain
the space station.

15
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By us maintaining the space
station, maintaining the power,

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maintaining the cooling,
maintaining the systems,

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we are supporting those
experiments allowing them

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to use the platform of the
International Space Station.

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I think it's one of mans'
greatest achievements.

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And now it's a fully
operational, fully functional,

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world-class laboratory
that is performing research

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on a daily basis.