The rockets... can be built so powerfully that they could be capable of carrying a man aloft.
Hermann Oberth
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If there is a small rocket on top of a big one, and if the big one is jettisoned and the small one is ignited, then their speeds are added.
- Hermann Oberth -
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I refrained from writing another one, thinking to myself: Never mind, I will prove that I am able to become a greater scientist than some of you, even without the title of doctor.
- Hermann Oberth -