One of the questions to the Answers to Correspondents column in the Daily Mail asked: “Have physicists ever attempted to calculate the total number of atoms in the known universe?”
The obvious answer is: “No, because the best guess would be just that, a guess, and knowing the exact number wouldn’t really do anyone any good. There would have to be lots of further information, like the distribution of atoms over the range of stable elements, and the distribution of matter within the universe, before the speculators would have much to get their teeth into.”
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