The 50th anniversary of the Apollo 11 lunar landing last year, and it’s worth recalling the memo that then-Vice President Lyndon Johnson wrote to President John F. Kennedy: “If we do not make the strong effort now, the time will soon be reached when the margin of control over space and over men’s minds through space accomplishments will have swung so far on the Russian side that we will not be able to catch up, let alone assume leadership.”

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