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Defense Advanced Research Projects Agency (DARPA) has requested immediate funding to demonstrate a nuclear thermal propulsion (NTP) system in space, according to the Pentagon's fiscal 2020 budget request, reported by Aviation Week & Space Technology.

DARPA's budget request includes approximately $10 million to begin the new program in 1H20.

The new space program is called Reactor On A Rocket (ROAR), will develop a high-assay low-enriched uranium (HALEU) propulsion system.

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