"Zetetic Astronomy: Earth Not a Globe by Samuel Rowbotham is a classic text promoting the Flat Earth theory, a belief that challenges the scientific consensus that the Earth is spherical. Written in 1865, Rowbotham’s work presents arguments in support of the idea that the Earth is flat, using a pseudoscientific approach that rejects heliocentrism and modern astronomy. The book claims that observations of the natural world, such as the horizon appearing level and the lack of observable curvature, support the theory of a flat Earth. Rowbotham also critiques the methods and findings of mainstream science, proposing his own ""Zetetic"" method of observation, which is grounded in what he considered more intuitive and accessible experiments. Though widely discredited today, Zetetic Astronomy played a role in promoting the Flat Earth movement in the 19th century and is still cited by Flat Earth adherents today."