Interplanetary Sciences: While the discipline of geography is normally concerned with the Earth, the term can also be informally used to describe the study of other worlds, such as the planets of the Solar System and even beyond.
行星學：雖然地理學通常關注地球，但亦有可能非正式地用作描述其他世界的研究，例如太陽系的其他行星，甚至更遠。