This is a possible concise summary:
In this episode of Nostalgia Science, Castanhari invites Leon and Nilce from Cadê a Chave and Coisa de Nerd to talk about the theory of a flat earth. They explain how science has proven that the earth is round since ancient times, using observations, experiments, and laws of gravity. They also debunk some of the arguments and claims of flat-earthers, and invite them to go to space and see for themselves. They end the video by thanking each other and promoting their science shows.
Here are the key facts extracted from the text:
- The text is a transcript of a video about the flat earth theory by Nostalgia Science, a Brazilian YouTube channel.
- The video features guests Leon and Nilce from Cadê a Chave and Coisa de Nerd, two other Brazilian YouTube channels.
- The video explains why the flat earth theory is not supported by scientific evidence, such as gravity, time zones, seasons, lunar eclipses, and photos from space.
- The video also mentions some historical figures who proved or demonstrated that the earth is round, such as Pythagoras, Aristotle, Eratosthenes, Magellan, and Apollo astronauts.
- The video is sponsored by Trilha do ENEM, a free platform for students to prepare for the ENEM exam in Brazil.