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 OberthThis is the goal: To make available for life every place where life is possible. To make inhabitable all worlds as yet uninhabitable, and all life purposeful.
Hermann OberthWe cannot take credit for our record avancement in certain scientific fields alone. We have been helped, and we have been helped by the people of other worlds.
Hermann OberthToday, we cannot produce machines that fly the same as UFOs do. They are flying by means of artificial fields of Gravity. This would explain the sudden changes of directions. This hypothesis would also explain the piling-up of these discs into a cylindrical or cigar-shaped mothership upon leaving the Earth.
Hermann Oberth