Through constant mutation and selection
complex life forms arise.
Darwin ripped the heart out of one of the God of the Gaps arguments (i.e. we don't know how
complex life forms arose, therefore the Judeo - Christian god did it) but Hubble showed that the whole idea of there being any cosmic importance to planet Earth is naked parochialism to the highest mathematical degree possible.
Not exact matches
The revolutionary discovery in the 1970s of a thriving
complex marine ecosystem around the hydrothermal vents of the Galapagos Rift on the ocean floor of the eastern Pacific forever changed our understanding of habitability showing that
life could also
arise and flourish in the complete absence of sunlight in conditions that were utterly toxic to any other
life forms on Earth.