Tsiolkovsky devised the Tsiolkovsky rocket equation, or ideal rocket equation, which describes the motion of vehicles that follow the basic principle of a rocket.

Konstantin Tsiolkovsky scientifically proved rockets could reach outer space.

Konstantin Tsiolkovsky's birth name is Konstantin Eduardovich Tsiolkovsky.

The father of space flight is a name given to Konstantin Tsiolkovsky, who was a Soviet rocket scientist. His specialty was astronautic theory.

K. E. Tsiolkovsky has written:

'Selected works [of] K.E. Tsiolkovsky'