The only SCIENCE-based reference guide you'll ever need to build your worlds! Whether you're writing hard science, a space opera, or a portal fantasy, or if you're creating a RPG campaign, this handy reference will help you remember all the weird physics, vocabulary, astrobiology, and space stuff you didn't pay attention to in high school!
A simplified guide to help you create worlds that don't require too much suspension of disbelief.
Galaxies
Scale of the universe
Black holes and dark matter
Celestial bodies
Star types
Planets & worlds
Exposure to space
Space-time and time dilation
Travel methods
Astrobiology
Sentience and sapience
Ecosystems
DNA & reproduction
and more!
Great reference for students, too! Small and lightweight, easy to carry around, doesn't take up space on your desk or bookshelf. No long text or formulas, just the basics, just in case you need it when you're stuck or want to include realistic science as the basis for your worlds.
