1835

From The Space Library

German astronomer Joseph Johan von Littrow writes Geschichte der Endeckung der allgemeinen Gravitation durch Newton (History of the Discovery of General Gravitation by Newton) in which he includes Kuntsliche Monde, die wir uns vieleicht einmahl selbst machen konnen (Artificial moons, which we may one day be able to do ourselves). In this short article he describes how an artificial satellite is possible but will have to wait until the force required for the launch becomes available. He also calculated the exact velocity required to reach orbit around both the Earth and the moon.

• 1835
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