February 10th, 2012
08:59 AM ET
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Astronaut feels space's toll on his body

It’s not really why he signed up to be an astronaut, but like it or not, Mike Barratt and his eyes have become a science project.

The eye charts he reads, the red drops that turn his eyes yellow and the ultrasounds being performed on him could determine whether he or any other astronaut ever journeys into deep space or sets foot on other worlds.

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Filed under: In Space

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