Vulcano: o planeta destruído por Einstein

https://interestingengineering.com/science/vulcan-hypothetical-planet
https://www.nationalgeographic.com/science/article/151104-newton-einstein-gravity-vulcan-planets-mercury-astronomy-theory-of-relativity-ngbooktalk
https://www.forbes.com/sites/jamiecartereurope/2019/05/24/return-of-the-planet-vulcan-how-the-fire-planet-was-destroyed-by-science-and-how-its-been-reborn/?sh=6ecdc4141283
https://www.theguardian.com/books/2016/sep/10/the-hunt-for-vulcan-by-thomas-levenson-review-newton-einstein-and-the-invisible-planet
https://canaltech.com.br/espaco/como-einstein-destruiu-vulcano-o-planeta-que-nao-existia-213327/