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Sheyna Gifford
Simulated Astronaut, HI-SEAS

Sheyna Gifford is the health science officer and crew journalist for the NASA HI-SEAS IV space exploration analogue on Hawaii. She writes for StarTalk Radio and blogs at

Written by Sheyna Gifford

Life on Mars

In a white dome on a bare mountain, six of us are road-testing life in a Martian colony. This is what I’ve learned so far

Sheyna Gifford

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