Here's your exclusive first look at a new star-map of Battlestar Galactica's Twelve Colonies, designed by writer Jane Espenson and science advisor Kevin Grazier. And Espenson and Grazier explained to us how twelve colonies can fit in one star system.

At the awesome panel called "The Science Behind Science Fiction," Phil "Bad Astronomer" Plait was joined by Kevin Grazier, a rocket scientist and science adviser for Battlestar Galactica and Eureka. Grazier said that sometimes the actors on the shows are as rabid about getting the science right as he is: James "Baltar"…