Aside from my gratitude toward the usual people who provided me with the holy trinity of emotional support, caffeine, and chocolate, this book required a lot of research on the various moons and planets that Constance visits (and blows up). I’m grateful especially for the International Astronomical Union Working Group for Planetary System Nomenclature, whose website is full of the most exciting maps, including one of Europa’s surface that I have used extensively.
The University of Sydney’s website provided me with the approximate specific heat capacity of the human body, as well as some pressing questions on how they came to have such a precise number for that value.
The equations governing Hawking radiation and the evaporation of a black hole I got from Wikipedia, because I gave up on making the citation gods proud after I realized that my college textbooks never got that far.
Thanks to my seventh-grade teacher for telling me the logic problem that Althea poses to Ananke. It pissed me off, so I put it in a book.
And finally, Wolfram Alpha, you are my star, my perfect silence; the light of my life and the fire of my loins; shall I compare thee to a summer’s day; etc. If there ever is an Ananke, I hope she is exactly like Wolfram Alpha.