: Investigates deep questions such as why the universe has a universal "speed limit" (the speed of light) and the true nature of space and time.

The book shifts the focus from what science has solved to what remains a mystery, framing this "cosmic ignorance" as an opportunity for future discovery.

is a popular science book that explores the vast gaps in our understanding of the cosmos. Authored by Jorge Cham, creator of PHD Comics , and Daniel Whiteson, a particle physicist, it uses humor and cartoons to explain complex physics while emphasizing that we are ignorant of roughly 95% of the universe . Key Concepts and Themes

: Explores why we are made of matter instead of antimatter and demystifies known entities like quarks, neutrinos, and the Higgs Boson .

: These make up the vast majority of the universe, yet they remain invisible and their nature is fundamentally unknown.