With the current political situation, launching nuclear reactors to orbit is nearly impossible. What is commonly overlooked, is what at least 15 RORSAT reactor cores (each filled with 30kg 90% enriched uranium) are already orbiting graveyard orbit 900-1000 kilometers high, at 65 degrees inclination.
These reactors were intended for short missions, and were shut down after burning about 1% of their fuel.
Potentially, uranium from all 15 reactors combined can supply up to 300 GWh energy (at 70% burnup).
Could you propose some scenarios how to re-use these reactor cores?