Interstellar linguistics explores the study of a universal language on Earth, considering potential communication with extraterrestrial civilizations. It involves the theoretical study of communication and language in the context of space and the possibility of interacting with extraterrestrial intelligences. The field explores the challenges of deciphering and understanding potential alien languages or forms of communication that may exist in the vast reaches of the cosmos. It delves into theoretical frameworks and methods for deciphering unknown languages that may exist in space. While speculative, it reflects humanity’s curiosity about potential encounters with intelligent beings from other parts of the universe and prepares for the possibility of communication in the future.