1. Reaction as a principle
of space travel.
With this conclusion, the author brings the first
part of his book to a close. Herman discusses gravity and ways of overcoming
it. He rules out the launching out of a gun, as suggested by Jules Verne.
The rocket-driven space vehicle is the only option.
technology will be used in everyday life. With this claim, Herman Potocnik concludes the
second part of his book wherein. He goes on to deal with the functioning
of the rocket during different stages of the flight. He contemplates the
rocket's efficiency while warning agaist its possible misuse for military
3. The vision of a geo-stationary
satellite. The contents of the third
segment. A satellite
with an angle speed equal to that of the point on Equator underneath it
will circle around the globe indefinitely. The satellite will circle 35,900
km above the earth's surface and will be 42,300 km from the center of the
earth. The speed of the satellite circling the globe: 3,080 km per second.
It will be used for research and communication purposes.
4. Nuclear and photonic
This is the technology that will make it possible
to travel to nearby planets in our universe. Space travel is not mere day-dreaming.
Instead, it is our technological future. This is the concluding thought
of the fourth and last segment of Herman's book.