panspermism

Panspermia is a scientific hypothesis suggesting that life exists throughout the universe, distributed by meteoroids, asteroids, and other celestial bodies. It proposes that life on Earth may have originated from extraterrestrial sources, rather than arising spontaneously on our planet. This concept is distinct from abiogenesis, which is the idea that life arose from nonliving matter on early Earth.12

The hypothesis of panspermia suggests that microbial life, or the chemical precursors to life, could travel through space and seed other planets. While the idea of life originating on Earth through abiogenesis is supported by experiments like the Miller-Urey experiment, which demonstrated the formation of organic molecules under simulated early Earth conditions, panspermia offers an alternative explanation for life's presence. The possibility of life on other planets, such as Mars, is also a subject of ongoing scientific investigation.123