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Q&A Why wouldn't my nuclear spaceships eject spent fuel?

In the year 2069AD, a spaceship is transporting hundreds of people in cryogenic sleep to a distant star. The spaceship engine is a nuclear fission reactor and its thruster is based on an ion drive ...

6 answers  ·  posted 5y ago by user6760‭  ·  last activity 5y ago by user6760‭