NASA's 10 crewed Project Gemini flights, which launched in 1965 and 1966, were instrumental in delivering the knowledge and testing that would lead to landing astronauts on the moon in July 1969 during the Apollo 11 mission.

Often overlooked as the middle child of the American space program in that turbulent decade, Project Gemini provided astronauts, scientists and engineers vital information for the development of more ambitious human spaceflight efforts.

"Gemini: Stepping Stone to the Moon, the Untold Story" (St. Martin's Press, 2025) is an absorbing new release arriving on Nov. 11 written by noted space historian, journalist and New York Times bestselling author Jeffrey Kluger ("Apollo 8," "Holdout").

It offers up the riveting tale of the valiant souls both high aloft and on the gro

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