From abrupt changes in gravity to galactic cosmic radiation, astronauts face numerous challenges as they push to explore further into the unknown. Dr. Emmanuel Urquieta and Dr. Fred Turek join Viewpoints this week to help us understand some of the large, short and long-term health impacts of spending months or years in orbit. 

Learn More: https://viewpointsradio.org/sleeping-in-zero-gravity-how-astronauts-train-for-months-or-years-up-in-space

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