Defense Department seeks nuclear propulsion for small spacecraft
 

The US Defense Department's ambitions beyond Earth just grew a little clearer. SpaceNews has learned the department recently put out a call for privately-made nuclear propulsion systems that could power small- and mid-sized spacecraft. The DoD wants to launch missions venturing beyond Earth orbit, and existing electric and solar spacecraft are neither suitable for that job nor suitable to smaller vehicles, the department's Defense Innovation Unit said.

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