Three days after returning to earth, the first cosmonaut gives a press conference. Answering the question of whether the true flight conditions differed from those he imagined, Gagarin replied: “The factors of space flight are very well described in Tsiolkovsky’s book. I’m just amazed how our wonderful scientist could foresee everything that I had a chance to meet, that I had to experience myself. "
Very many assumptions of Konstantin Tsiokovsky turned out to be absolutely correct.
Konstantin Tsiolkovsky Eduardovich - the legendary founder of theoretical cosmonautics. He was the first in the world to propose using artificial satellites, rockets and orbital stations long before they could be built.