which scientist proposed the concept of panspermia
Arrhenius (1908, Nobel Prize Winner of 1903 in Chemistry) postulated the (= Panspermia Theory) and stated that organisms existed throughout the universe and their spores etc., could freely travel through space from one star to the others. In fact, panspermia theory is the alternative name of cosmozoic theory. Evidences against Cosmozoic Theory: Living matter cannot survive the extreme cold, dryness and ultra-violet radiation from the sun required to be crossed for reaching the earth.