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Figure 4 from NUCLEAR THERMAL ROCKET/VEHICLE CHARACTERISTICS AND SENSITIVITY TRADES FOR NASA's MARS DESIGN REFERENCE ARCHITECTURE (DRA) 5.0 STUDY

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Sea Oats frame The Orbital Science Corp's Minotaur 1 rocket as it sits on its launch pad at NASA's Wallops Flight Facility in Wallops Island, Va., Saturday, Dec. 9, 2006. The rocket

NASA and DARPA to develop nuclear thermal rocket engine that may put humans on Mars: reports