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Dismal-Philosopher-4 t1_j244pq8 wrote

I don't think history would've changed much. Nuclear energy and reactions have never stopped being researched. If anything amazing and useful to space travel had come along it would've certainly been implemented.

The fact is also that we can reach pretty much anything in the Solar system with normal propulsion anyway + non-human crafts and probes can be smaller and smaller.


CoivaraPA t1_j24wph1 wrote

Chem engines can't deliver quick travel beyond the Earth-Moon system. Six months to Mars is a joke