The Flat Earth movement is a belief that the Earth is not a sphere but rather a flat, disc-shaped object. Proponents argue that evidence from personal observation and certain interpretations of scientific data support their view. They often claim that mainstream science, including the NASA space agency, promotes a spherical Earth for various reasons, including control and misinformation. Members of the Flat Earth movement often gather in online communities and hold conferences to discuss their ideas and share information. They challenge conventional scientific understanding and promote alternative theories about the Earth's shape, gravity, and the nature of the universe.