Project Orion Nuclear Pulse Rocket, Technical Reports on the Orion Concept, Atomic Bombs Propelling Massive Spaceships to the Planets, External Pulsed Plasma Propulsion    by Progressive Management
Price: $9.99 USD. 59650 words. Published on August 17, 2011. .
This unique ebook features reproductions of technical reports from NASA and General Atomic on Project Orion, an audacious concept involving the sequential detonation of low-yield atomic bombs to propel large spaceships to the planets. These reports were previously secret and have been declassified. The concept was abandoned by NASA in the mid-1960s.

First Mars    by Steven Howe
Price: $0.99 USD. 27970 words. Published on September 5, 2011. .
First Mars takes the next step – the first human mission to Mars. Because of the advances in virtual reality, humans have learned to control the awesome power released in the gas core nuclear rocket. Unfortunately, some people believe that no one should go to Mars at all.

Science in Flux: NASA's Nuclear Program at Plum Brook Station, 1955 - 2005 (NASA SP-2006-4317) - Nuclear Rockets, NERVA, Atomic Airplanes, Aircraft Nuclear Propulsion    by Progressive Management
Price: $9.99 USD. 108040 words. Published on March 1, 2012. .
This official NASA history document - converted for accurate flowing-text e-book format reproduction - is a dramatic account of the history of NASA's nuclear reactors at the Plum Brook Station in Sandusky, Ohio.