> edit: Looks like there is some research being done, https://www.darpa.mil/news-events/2023-07-26 https://www.darpa.mil/news-events/2023-07-26 Lockheed Martin

> edit: Looks like there is some research being done, https://www.darpa.mil/news-events/2023-07-26 https://www.darpa.mil/news-events/2023-07-26 Lockheed Martin and BWXT will build a demonstrator vehicle that will power up a reactor in space by 2027. If that timeline holds, then actually seeing a nuclear-powered rocket in space is very near.