Astrobiology is the interdisciplinary study that explores the origin, evolution, distribution, and future of life in the universe. The search for extraterrestrial life focuses primarily on identifying habitable environments beyond Earth, such as exoplanets residing within the habitable zones of their parent stars. Key scientific efforts involve the detection of biosignatures—such as unusual atmospheric compositions, specific chemical disequilibrium, or energy gradients—that might indicate biological processes. These investigations examine theoretical life forms across varied chemical and physical parameters, proposing models for how life could arise independently on other celestial bodies, whether through chemical evolution on icy moons or within dense planetary atmospheres.