DARPA Wants To Assemble, Demo Nuclear Rocket in Orbit
Mar 20, 2019
https://aviationweek.com/program-management-corner/darpa-wants-assemble-demo-nuclear-rocket-orbit
DARPA plans to demonstrate a nuclear thermal propulsion (NTP) system
that can be assembled on orbit to expand U.S. operating presence in cislunar space,
according to the Pentagon advanced research agency’s fiscal 2020 budget

https://aviationweek.com/site-files/aviationweek.com/files/imagecache/medium_img/uploads/2019/03/nerva-engine-diagram-nasa.jpg

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