Opinion: I'm an astronaut. Here's what I can tell you about

Retired NASA astronaut Leroy Chiao explains what candidates can expect if they are chosen for a yearlong stay on the space agency’s Mars simulator.

Related Keywords

Russia , , Crew Health , Johnson Space Center , Cnn , International Space Station , Red Planet , Space Center , Performance Exploration Analog , Internet Protocol , Mars Mission , Nasa , Space Mission , Simulator , Human Space Exploration , Cars ,