A DARPA official said the agency canceled a space nuclear propulsion project it was jointly developing with NASA in part because the effort was overtaken by lower launch costs.

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NASA and DARPA have selected Lockheed Martin to develop a spacecraft to demonstrate nuclear propulsion technologies in Earth orbit later this decade.

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TRISO-X LLC (“TRISO-X”), a wholly owned subsidiary of X-Energy Reactor Company, LLC (“X-energy”) that primarily develops and designs tri-structural isotropic (“TRISO”) particle fuel, today announced the successful test of its […]

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NASA and DARPA will cooperate on the development and flight demonstration of a nuclear propulsion system with applications for both national security and space exploration.

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