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congratulations

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mauricio londono from columbia south

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america has a question do you use the

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common wristwatch on board or do you

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have a special one well let me answer

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the question this way

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i've got a lot of different watches

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on board one of these is actually for an

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experiment it's trying to look at the

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effect on sleep cycles

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and studying the amount of light that

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we're exposed to

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and the movement that we

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that we have it's looking at most of

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both of those things

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in response to being in zero gravity and

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also the light and day cycles we have up

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here

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another watch is a as a space flight

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approved watch that

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that nasa

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uh issues to us

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and that watch is a regular watch but it

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also can

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keep track of a lot of different times

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like

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gmt uh

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and

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use so that's kind of the

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daily watch that we use

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and then

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i have another watch that i'm using

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which is kind of more of a sports timing

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kind of watch and i use that

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to get um

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alarms set

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by syncing it up with the computer for

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earth observations because we get daily

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we get a sequence of opportunities to

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take a picture of something on the

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ground that has to do with a science uh

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observation opportunity

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uh from different sites around the world

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and it could be anything from

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looking at you know the way um uh water

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use has affected a particular region or

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how a region has changed because of

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burning or um

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or just a current hurricane

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something like that that's that's

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happening right now

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and uh so this watch i use to set alarms

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for that so throughout the day the alarm

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goes off and i can

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grab a camera race to a window and try

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to capture some pictures

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so um anyway um you know my dad always

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used to say

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that

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somebody with the watch always knows the

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time and somebody with two was never