The footprints Mankind left on the Moon from 1969 to 1972 were the result of a decade of hard work, patriotism and dedication by hundreds of thousands of Americans. But it was Project Gemini, virtually forgotten between the pioneering Mercury and titanic Apollo programs that made the lunar landings possible. Gemini was the incredible technological achievement that proved the innovative hardware and techniques. Without Gemini, there would be no human footprints on the Moon.