I have recently been reading a lot of different theories into how life actually developed here on Earth, and I had no idea there were so many different views.
Lightning striking a primordial amino acid soup. Impact of magnetite asteroids carring aggressive DNA. I myself am inclined to agree with the cometary impact theory. Comets, also called dirty snowballs, carry water as well as other organic compounds. It is my own personal theory that a comet impacted Earth carrying organic compounds and hit at a point that contained our primordial DNA/amino acid soup and the heat produced as an after effect provided the catylist for life to form.
Does anyone agree, and if not I'd like to hear your own theories.