Chris Hadfield: Before we colonize Mars, we should settle the moon – NBCNews.com


NASA and private entrepreneurs with deep pockets like Elon Musk have spent billions of dollars exploring Mars, with the goal to eventually colonize the planet. But what if it’s not the only site to explore? Retired astronaut and author of “An Astronaut’s Guide to Life on Earth” weighs in.Mar.30.2018



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