You can say 8 years, from 1961 to 1969.
Manned space flight is a voyage into space with a human passenger on board.
Vostok 1 was the first human spaceflight in history. See related link..
Apollo 17 was the eleventh manned space mission in the NASA Apollo program. It was the first night launch of a U.S. human spaceflight and the sixth and final lunar landing mission of the Apollo program. The mission was launched at 12:33 a.m. EST on December 7, 1972, and concluded on December 19. It remains both the most recent manned moon landing and manned flight beyond low Earth orbit.
Yuri Gagarin (USSR) became the first human in space on 12 April 1961.
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Neal M. Burns has written: 'Unusual environments and human behavior' -- subject(s): Manned space flight, Space medicine
Apollo 11 was the first manned mission that put a human on another celestial body: the Moon.
No human has been on the planet Mars as yet, although there are plans for manned missions to mars in the future!
Manned Exploration, commonly referred to in NASA as Manned Flight, is any mission which involves the direct participation in space of a human being, be it as a pilot, specialist, or just a casual observer. The 2 most notable current MF programs are the International Space Station and the Space Shuttle. All NASA Manned Flight missions are directed from the main Mission Control Center in Houston, Texas, at the Johnson Space Center.Unlike unmanned satellite programs, Manned Flight programs are much more stringently controlled , Higher QA and manufacturing controls, a LOT more documentation (reams....), and more procedural controls are the biggest differences, as the smallest mistake can lead to catastrophic failure leading to loss of crew, vehicle, or both.In all cases where loss of life has happened (Apollo 1, Challenger and Columbia), one of those 3 elements was found to be lacking.As one who worked NASA Manned Flight programs for many years, I can say that the awareness of the responsibility for us working those programs was extremely high. Everyone knows what the stakes are each time a manned mission flies - and everyone feels it if something goes wrong.
Vostok-1 (USSR) Kedr (Cedar) April 12, 1961 Gagarin Cosmonaut Yuri Garagin became the first human in space.
Yuri Gagarin was a Russian Cosmonaut and the first human in space, as well as the first human to orbit the earth.
The first human spaceflight was undertaken on April 12, 1961, when cosmonaut Yuri Gagarin made one orbit around the Earth aboard the Vostok 1 spacecraft, launched by the Soviet space program and designed by the rocket scientists Sergey Korolyov and Kerim Kerimov.