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Over the last decade, billionaires like Jeff Bezos, Elon Musk, and Richard Branson have come to embody the future of space travel and exploration. What does it mean when the ideas and ambitions of a few powerful men come to dominate the conversation so thoroughly? Guest: Lucianne Walkowicz, astronomer at the Adler Planetarium and founder of the Just Space Alliance Host Lizzie O’Leary This episode is sponsored by Teamistry. You can listen here Learn more about your ad choices. Visit megaphone.fm/adchoices