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en.wikipedia.org/wiki/Shannon_number

The Shannon number, named after Claude Shannon, is a conservative lower bound (not an ... As a comparison, the number of atoms in the observable universe, to which it is often compared, is estimated to be between 4×1079 and 4 ×1081.

www.universetoday.com/36302/atoms-in-the-universe

A billion years after the big bang, hydrogen atoms were mysteriously torn ... And yet, those numbers don't accurately reflect how much matter the universe may ...

physics.stackexchange.com/questions/47941/dumbed-down-explanation-how-scientists-know-the-number-of-atoms-in-the-universe

The observable universe contains about 100 billion galaxies, each containing on average close to a trillion stars. That is a total of about 10 23 stars.

www.thoughtco.com/number-of-atoms-in-the-universe-603795

Jul 22, 2015 ... Have you ever wondered how many atoms there are in the universe? Here is the number and the explanation of how scientists estimate the ...

.ask.com/youtube?q=How+Many+Atoms+Are+in+the+Universe%3F&v=JlfUon3ctrs
Nov 3, 2014 ... Hello people! Do you know, how many atoms are in the universe? Watch this video and see it! !!!REAL NUMBER!!!

educationblog.oup.com/secondary/maths/numbers-of-atoms-in-the-universe

Nov 24, 2015 ... In my last blog I looked at the number 'a googol', which is 10100 and questioned how it would compare to the number of atoms in the universe.

www.quora.com/How-many-atoms-are-there-in-the-Universe

Matter content — number of atoms[edit] Assuming the mass of ordinary matter is about 1.45×10*53 kg (reference previous section) and assuming all atoms are ...

www.quora.com/How-many-atoms-are-there-in-the-known-universe

According to Universe Today the observable universe has between and atoms. We don't know the size or shape (topology) of the overall universe so can't estimate ...

www.quora.com/Theoretically-how-many-atoms-are-there-in-the-universe

The observable universe is estimated to contain 10–10 atoms, which is based on an assumption for the sake of simplicity that all atoms are hydrogen atoms (which in ...

www.thenakedscientists.com/forum/index.php?topic=21042.50

This is the estimated number of atoms in the observable universe, but since we do not know the absolute size of the universe, we cannot be ...