Stars and sand

If you want to blow your mind, try contemplating how many grains of sand there are on Earth, or how many stars there are in the universe. If you want to go a step further, try deciding whether there are more grains or stars. If you want the answer, science may have it for you. To calculate the grains of sand on Earth, researchers first measured the average size of a grain of sand then calculated how many grains it would take to fill a vessel such as a two-litre jug. Based on the latest geological surveys they calculated the total volume of sand on Earth, and projecting their two-litre jug calculations onto that figure came to the conclusion that Earth hosts 7.5 sextillion grains of sand (that’s 7.5 followed by…

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WellBeing (Digital) - 1 Issue, Issue 204

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