Humans In Space with Astronaut Leland Melvin and Dr. Sheyna Gifford

Are human bodies good for space? Neil deGrasse Tyson and co-hosts Chuck Nice and Gary O’Reilly discover the effects of space on the human body and if we are ready for long-haul missions with astronaut Leland Melvin and space doc, Dr. Sheyna Gifford. 

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Photo Credit: NASA/JPL-Caltech