Astronomy & Space Science · Spaceflight & Astronautics
Human Spaceflight
A topic within Spaceflight & Astronautics, itself one of 12 topics in that field and part of Astronomy & Space Science.
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- PaperThe Exploration of Cosmic Space by Means of Reaction DevicesKonstantin Tsiolkovsky, 1903
Derives the rocket equation, establishing the exponential mass penalty that still governs every launch.