DanM, on 07 February 2014 - 10:32 PM, said:
do have to admit to an extent there is a pretty big missing link between rocks becoming living organisms
there are some gaps, but according to NASA Ames research the materials needed were quite common during the formation of the solar system. Meteorites and cometary bodies are loaded with them.
Scientists have been able to take the compounds (carbon, amino acids, etc.), "cook" them in a lab, and produce organic gunk.
Open questions still pervade. The origins of the material. It requires UV radiation to create them which would have been absent in a solar nebula cloud of dust. How to get from simple amino acids, nucleobases, and amphiphiles to strands of RNA or DNA and building block proteins.