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Continue to Chat5 NASA Scientists Talk About What They Do And Why They Do It https://www.saylor.org/2013/10/5-nasa-scientists-talk-about-what-they-do-and-why-they-do-it/
5 NASA Scientists Talk About What They Do And Why They Do It https://www.saylor.org/2013/10/5-nasa-scientists-talk-about-what-they-do-and-why-they-do-it/