Explore "The Vortex Blaster Makes War" by E.E. Smith on Textopian. Read with annotations and highlights.
The planet Dhil and its enormous satellite, called "Lune" in lieu of the utterly unpronounceable name its inhabitants gave it, are almost twin worlds, revolving about their common center of gravity and circling as one about their sun in its second orbit. In the third orbit revolves Uhal, a planet strikingly similar to Dhil in every respect of gravity, atmosphere, and climate. Furthermore, Dhilians and Uhalians are, to all interests and purposes, identical.[1]
[Footnote 1: For the explanation of these somewhat peculiar facts, which is too long to go into here, the reader is referred to _Transactions of the Planetographical Society; Vol. 283, No. 11, p. 2745_. -- E. E. S.]