For questions regarding planets similar to Earth in most respects. This tag should be used when describing a planet that follows the rules of Earth with exceptions outlined in the question. Usually questions using this tag will be about the differences and the impacts of those differences.
Questions with this tag allow users to forgo outlining details of the world they are asking about that are not relevant to their specific question. A user answering a question with this tag may assume that unless otherwise specified in the question, the rules of science on Earth apply.