"Since the original edition of The Space Book was published in 2013, much has happened in the world of space exploration. This revised and updated edition, with a new introduction from author Jim Bell, brings the popular Milestones book up to date. It includes the most exciting and newsworthy breakthroughs, from the groundbreaking discovery of the Trappist-1 system to the technologies of the future" -- From Amazon.com summary.
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