Drafts “Free Space” on weightlessnessFeb 20, 1883Labels: Essay Free, WeightlessnessTsiolkovsky orgEpizody Space
Publishes “A Controllable Metallic Balloon”Jan 1, 1892Labels: A Controllable, DirigibleWikipediaMetal airship
Imagines satellites in “Dreams of Earth and Sky”Jan 1, 1895Labels: Dreams of, Artificial satelliteEncyclopedia comWikipedia
Begins systematic rocket-theory calculationsJan 1, 1896Labels: Rocket calculations, Rocketry theoryTsiolkovsky orgWikipedia
Builds a small wind tunnel for aerodynamicsJan 1, 1896Labels: Wind tunnel, AerodynamicsAero SocietyWikipedia
Publishes “Reaction Devices” and the rocket equationJan 1, 1903Labels: Reaction Devices, Rocket equationRocket equationHistory rockets
Publishes a second part expanding spaceflight calculationsJan 1, 1911Labels: Reaction Devices, Orbital calculationsTsiolkovsky orgWikipedia
Fiction “Outside the Earth” published in KalugaJan 1, 1920Labels: Outside the, Science fictionPres LibraryWikipedia
Receives a state pension and wider recognitionJan 1, 1921Labels: State pension, Soviet recognitionETSU essayWikipedia
Issues a revised standalone edition of “Reaction Devices”Nov 21, 1926Labels: Reaction Devices, Revised editionTsiolkovsky orgTsiolkovsky org
Publishes “Space Rocket Trains” on staging conceptsOct 1, 1929Labels: Space Rocket, Staging conceptEncyclopedia comRussianSpaceWeb
Dies in Kaluga; later generations build on his theorySep 19, 1935Labels: Death in, LegacyWikipediaSputnik Intl