Robert Zubrin is president of the Mars Society and Pioneer Astronautics and the author of “The Case for Mars.” Homer Hickam is a former NASA engineer and the author of multiple books, including the memoir “Rocket Boys,” which was made into the film “October Sky.”
Late last year, President Trump directed NASA to “lead the return of humans to the moon.” For most folks, the meaning of this was pretty clear: Americans would soon walk on the moon again.
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