For the past fifteen years, acclaimed science writer Margaret Wertheim has been collecting the works of Jim Carter and other mavericks and outsiders who invent alternate theories of the universe. By considering the motivations behind their do-it-yourself theories and homemade experiments, Wertheim raises the question of what role an amateur can play in relationship to science. Deeply human, literally fantastical, infused with wit and humor, Physics on the Fringe challenges our conception of what science is, how it works, and who it is for.