PREBIOTIC CALCULATIONS. “We have therefore argued in the past that prebiotic scenarios may be adequately described in terms of planet-scale random chemistry reactions. Based on a count of about 1 million molecule types for alkanes with up to 20 carbon atoms, it may be estimated that for compounds containing all CHNOPS atoms (Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus and Sulfur) the number would be much larger than one billion.”
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