Her first book, The End of Everything (Astrophysically Speaking), was published by Simon & Schuster in August 2020, the firm having won the rights in an eight-way bidding battle. It considers the five scenarios for the end of the universe (both theoretically and practically), and has received positive reviews both for its science outreach accuracy and its wit. The book was also a New York Times Notable Book and featured on the best books of the year lists of The Washington Post, The Economist, New Scientist, Publishers Weekly, and The Guardian.