Scientists have estimated the answer to this age-old question. However, the vastness of these big, big numbers can be limited by our human perspective.
Is it true that there are more atoms in a grain of sand than grains of sand on Earth? - Quora
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Which Is Greater, The Number Of Sand Grains On Earth Or Stars In The Sky? : Krulwich Wonders : NPR
Light Pollution : r/interestingasfuck
How many grains of sand are on Earth? Multiply 7.5. - Quora
If the whole Earth would be filled with grains of sand, how many grains would it be? - Quora
What is the estimate of the number of grains of sand on Earth and does this come to less than the number of galaxies in our universe? - Quora
More stars in the universe than grains of sand on earth? - typewhiter.
Do we see more stars in a desert? - Quora
Happy Mole Day from the CSN! – Sustainable Nano