Although mildly obscure to the modern-day folk, the major fundamentals of space travel arose due to the Exploration of Outer Space by Means of Rocket Devices ("Исследование мировых пространств реактивными приборами"), written by the Father of Space-Rocketry, Konstantin Tsiolkovsky. This work, published in 1903, grew massively in the scientific community, and this fueled the Great Race, the rise of colonization and exploration of the satellites of our Sun.
Now, what might happen if either Tsiolkovsky was never born, or his works were never published or caused the great change in science that it caused IOTL. How would this change the world at large?
Now, what might happen if either Tsiolkovsky was never born, or his works were never published or caused the great change in science that it caused IOTL. How would this change the world at large?