Tellurian refers to anything related to Earth or its inhabitants. The term is derived from the Latin word "tellus," meaning Earth. In various contexts, it can describe terrestrial life forms, geological features, or environmental aspects of our planet. In a scientific context, Tellurian can also relate to the study of Earth-like planets and their potential for supporting life. This includes research in fields like astronomy and planetary science, where scientists explore the characteristics that make a planet similar to Earth, such as its atmosphere, temperature, and presence of water.