The Flat Earth Movement is a belief system that asserts the Earth is flat rather than spherical. Proponents argue that evidence from personal observation and various interpretations of scientific data support their view. They often claim that mainstream science, including the work of organizations like NASA, is misleading or part of a larger conspiracy. Members of the movement engage in discussions and share information through social media and conferences. They often challenge established scientific principles, such as gravity and the curvature of the Earth, and promote alternative explanations for phenomena like the horizon and the behavior of water.