|"Is this all real? Or has this been happening inside my head?"
The subject of this article is a real-life person, group, company, product, or creative work that has been mentioned "in-universe" in a canon source. The Harry Potter Wiki is written from the perspective that all information presented in canon is true (e.g., Hogwarts really exists), and, as such, details contained in this article may differ from real world facts.
A Brief History of Time: From the Big Bang to Black Holes is a book written by Muggle Stephen Hawking and first published by the Bantam Dell Publishing Group in 1988., concerning a range of subjects in cosmology including the Big Bang and black holes. In 1993, a patron at the Leaky Cauldron was reading this book. The introduction was written by Carl Sagan.
Behind the scenes
- The inclusion of this book in the film version of Harry Potter and the Prisoner of Azkaban foreshadows time travel later in the film.
- Harry Potter and the Prisoner of Azkaban (film) (First appearance)