Direct ascent was a proposed method for a mission to the Moon. In the United States, direct ascent proposed using the enormous Nova rocket to launch a spacecraft directly to the Moon, where it would land tail-first and then launch off the Moon back to Earth. The other options that NASA considered for the mission to the moon were Lunar Orbit Rendez...
Found on
http://en.wikipedia.org/wiki/Direct_ascent
A boost trajectory that goes directly to the final burnout and coast trajectory without the need for a parking orbit or staging location. Direct ascent of a spacecraft from Earth to the Moon was one of the options considered for the Apollo program and was the method depicted for this journey in Dest...
Found on
http://www.daviddarling.info/encyclopedia/D/direct_ascent.html
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