Well, yes, that is a difficulty with the hypothesis if the earth-sun mass relation is correct as it currently stands. Heavier elements in the sun would then result in a few thousands planets like earth. The author contest the relationship while myself, I have not reached a conclusive opinion on that. I can't say until I understand much better than I do what mass and gravity is.
First, what is a "conclusive opinion"?
Secondly, you don't need to know what mass and gravity are in order to calculate the ratio of mass sun/ mass of earth. All you have to accept is that Newton's law of gravitation is essentially accurate for the solar system. It is quite easy to calculate the mass of nearby masses that have tiny objects in orbit around them, and both the sun and the earth have such objects. There is scant reason to question that the mass of the sun is about 330,000 times that of the earth.
Edited by NoNukes, : No reason given.
Edited by NoNukes, : No reason given.
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