I don't think that numbers 3, 4, and 5 should be included on this list:
#3: Saying something after the fact is quite different from making a prediction.
#4: Space travel still hasn't really been demonstrated in any sort of meaningful way. The only successful manned missions into space have all been in orbit around earth. Until we successfully send a manned mission to a celestial body not in orbit around earth (the planned Mars mission, for example), I'd say this is still open for debate.
#5: This isn't a prediction, it's a statement on what current evidence indicates. Einstein was far too smart to say 'Nuclear power is impossible.' Instead, he simply says that there's no evidence to suggest that it is possible. That's better science than if he had said "There's no evidence to suggest that nuclear power is possible, but I believe it is possible anyway."
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