Do Stars Outnumber the Sands of Earth’s Beaches?
Figuring out whether there are more stars in the universe than sand grains on Earth’s seashores requires math—and imagination
![Do Stars Outnumber the Sands of Earth’s Beaches?](https://static.scientificamerican.com/dam/m/40ea3ce682baf9d9/original/GettyImages-943676014_WEB.jpg?w=1200)
Figuring out whether there are more stars in the universe than sand grains on Earth’s seashores requires math—and imagination
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