You’ve always wanted to—go ahead and draw a map of your imaginary world or planet. No, it never has to be published. But it might help generate a “sense of place” at least in the author—and it could lead to some story ideas. Read a popular astronomy book on habitable planets. There are good ones by Carl Sagan, Isaac Asimov, and other famous scientists. Notice that factors such as the distance of a planet to its primary (star) can determine a planet’s weather, biochemistry, and ecology.
This article was taken from the course Essentials of Science Fiction & Fantasy Writing. Click here to register for the course now!