Interplanetary travels. Perelman Ya.I.

How is the space rocket arranged? Due to what does it overcome the force of gravity of the earth? At what speed the rocket should fly to get to another planet, stars or even systems, and how to calculate it? How much food people will need for such a trip and what will be its term? This is only a small part of the questions that are in this book. It is dedicated to the history and theory of space physics and is intended for schoolchildren who dream of interplanetary flight. With its help, they find out why the science fiction writers were mistaken, describing space travel in novels, and how scientific physical thought and missile construction developed. The book is written in an accessible language and does not require special knowledge. However, for those who want to plunge deeper into the topic, a special application has been made with more complex calculations and theories.