👉 The term "extratellurian" refers to a planet that orbits around another star, rather than directly around its own star. This is different from planets orbiting stars like Mars or Jupiter, which are part of our solar system and have an orbit around their home star. In the context of astronomy and space exploration, extratellurians can be thought of as planets that are not directly close to a planet in our solar system but still orbit around it, potentially due to gravitational