The idea that life originated on another planet outside our solar system suggests that life didn’t begin on Earth but was brought here from elsewhere in the universe. This concept is often called panspermia. According to this theory, microorganisms or chemical precursors of life might have traveled through space on meteoroids, comets, or dust and landed on Earth, where they eventually developed into living organisms. This explanation expands the possibility that life could exist or have started beyond our solar system.