Hohmann was influenced in part by the German science fiction author Kurd Lasswitz and his 1897 book Two Planets.
His first published science fiction story was "Bis zum Nullpunkt des Seins" ("To the Zero Point of Existence", 1871), depicting life in 2371, but he earned his reputation with his 1897 novel Two Planets, which describes an encounter between humans and a Martian civilization that is older and more advanced.
:Certain examples that Aristotle attributes to Democritus and Leucippus clearly prefigure it, but its belated inventor is Gustav Theodor Fechner, and its first exponent, Kurd Lasswitz.