The second edition covers everything in the first edition, together with information from over 500 scientific papers and data collected on exoplanets over the intervening ten years. No evidence collected in the intervening period overturns any of the proposed fundamental issues, although some refinements have been made. While the standard model assumes planets formed from the coalescence of planetesimals, even though there was no proposal how the planetesimals formed and even though all evidence of asteroid collisions led to fragmentation, the proposal here is that initial accretion was chemically based, and growth was monarchic as opposed to oligarchic. This satisfies the question, why is the composition of the planets and their moon systems different from others?
More evidence is presented as to why life started with the RNA world. It shows how RNA strands form from nucleotides, how catalytic behaviour can readily evolve and on the question of how ribose forms, it shows that life almost certainly formed around fumaroles in granitic rock. That, in turn, means that life has to commence on an Earth-like planet, which in turn makes life most probable around a G or heavy K star that had an early stellar cleanout, signified by no planet significantly larger than Jupiter.
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