Pluto: The Demoted Dwarf Planet
发布时间 来源
Episode 设置
摘要
It was the only planet to have been discovered by an American, but it's no longer classified as a planet. Who found Pluto, and how did astronomers even know to look for the so-called Planet X on the edge of our solar system?
GPT-4正在为你翻译摘要中......
