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Astrobiology is the study of the origin, evolution, and distribution of life in the universe. It combines aspects of biology, chemistry, physics, geology, and astronomy to explore the conditions necessary for life and the search for extraterrestrial organisms. As a subfield of space science, astrobiology seeks to understand how life emerges and persists in various environments within our solar system and beyond, making it an exciting area of research that pushes the boundaries of scientific discovery.