Cosmozoic theory(theory of panspermia) given by Richter (1865) ,helmholtz (1884) ,Arrhenius (1980) suggested that life reached the earth from some heavenly body through meteorites. Panspermia (primitive form of life, as suggested by Arrhenius 1908) consisted of spores or seeds (sperms) and microbes that existed together throughout universe   and produced different forms of life on this earth
The cosmozic Theory propose that life on earth did not actually originate on this planet,though there are several other theories on how life actually did