A Mars mission which could have been. In 1985 a manned Mars expedition is launched atop a Saturn VB, an upgraded version of the Saturn V which launched astronauts to the Moon, with the addition of four solid rocket boosters. The crew join a propulsion stack, already assembled in orbit, and make use of a gravitational slingshot with a flyby of Venus.

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А ведь технически вполне возможно было бы, если бы не просрали все полимеры после Луны.