🚀 #RocketHistory

📆 16th century
Johann #Schmidlap invented the "step rocket," a multi-staged vehicle, basic to all rockets today that go into #OuterSpace
📆 17th century
Isaac #Newton explained how rockets work and why they are able to work in the vacuum of outer space
📆 1898
Konstantin #Tsiolkovsky suggested the use of liquid propellants for rockets in order to achieve greater range
📆 1923
Hermann #Oberth published a book about rocket travel into outer space

https://www.grc.nasa.gov/www/k-12/TRC/Rockets/history_of_rockets.html