Stories by Otto Hoffmann

The SciencesJanuary 14, 1911

The Number of Stars in the Universe

How Celestial Bodies are Counted

Otto Hoffmann

The SciencesDecember 3, 1910

The Canals of Mars

Otto Hoffmann

The SciencesMay 14, 1910

The System of the Universe

Otto Hoffmann

The SciencesSeptember 26, 1908

The Problem of the Rotation of Venus

Does the Planet Really Turn?

Otto Hoffmann