Making Rocket Fuel on Mars (1978)

In the late 1970s, the Jet Propulsion Laboratory studied a range of possible Mars missions, including a sample-return mission. But the U.S. economy was under strain and NASA, JPL's main customer, was devoting most of its resources to developing the Space Shuttle. In addition, equivocal data from the trio of astrobiology experiments on the twin Vikings, the first successful Mars landers, had damped public enthusiasm for the Red Planet. For a Mars sample-return mission to stand a chance of acceptance, technologies and techniques were needed to dramatically trim its anticipated cost. One idea involved making the fuel on Mars for the return to Earth.

Source: http://www.wired.com/wiredscience/2012/11/making-rocket-fuel-on-mars-1978/

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