Сегодня родился Циолковский Константин Эдуардович
On September 17, 1857 Tsiolkovsky Konstantin Eduardovich was born. This is the pioneer of theoretical astronautics, the scientist-self-educated person, an inventor, a school teacher, an author of science-fiction works, a propagandist of ideas of development of space. He proved using of rockets for flights in space, came to a conclusion about need of using "rocket trains" — prototypes of multistage rockets. His main scientific works relate to aeronautics, rocket dynamics and astronautics.