"World-Building" is the volume in the Science Fiction Writing Series edited supporting planets. Stephen L. Gillett has a doctorate in geology, was the science columnist at "Amazing Science Fiction" and has written SF under a pseudonym. My doctorate is in rhetorical studies, so I am starting at ground zero when it comes to understanding or at least appreciating the mathematical equations for escape velocity, scaling tidal forces or Roche's limit. While this book thoroughly convinced me that I have no aptitude for writing hard science, I can see how it would be extremely helpful to anyone interested in being on a strong scientific foundation when it comes to writing their own stories.

Gillett's volume has eight chapters: (1) Why World-Build? looks at the necessity of using real science to create the requisite sense of wonder in your science fiction writing; (2) The Astronomical Setting covers the important differences between planets and stars in general and gravity, orbits, seasons and tidal action in particular; (3) Making a Planet details how the formation of a planetary system impacts the resulting planets and the options for story writing; (4) The Earth looks at the interconnected aspects that make interesting variations possible with the home worlds you create because of plate tectonics, water and air, magnetic field, colors, etc.; (5) The Ancient Earth deals with avoiding the "Cenozoic Earth Syndrome" (creating an alien world Building" will help you in writing your own Science Fiction. I appreciate that for some people this book does not go far enough, but certainly for the vast majority of us it gives us enough information that we will not thoroughly embarrass ourselves when it comes to creating new worlds for our characters to inhabit and visit.

Building takes a look at planets in general it does focus on Earthlike planets in particular. Energies takes a wide-ranging look at Earth itself(its biomass, climate, animals and technology) with extensive charts, graphs and equations and fills in some areas where World-Building is thin. The books complement each other amazingly well. In addition, both list other references and resources for additional research.

This is probably the best and only book that clearly states the current understanding of stars and formation/evolution of planets around them, in plain speech. The information is as extensive as it is scientifically accurate which is a great plus for an aspiring fiction writer who does not want to look over the countless pages of an Encyclopaedia Formulae on astrophysics. Besides the numerous formulas one needs to create a (scientifically) cohesive world, Gillett also gives many tidbits from the fiction writing over the course of time, allowing you to become familiar with the possibilities of several future technologies/discoveries. Also included are several studies of fictuous odd-ball worlds ( one is an ocean world filled with sulfuric acid). This book will likely be useful to the writer as well as the explorer within everyone.