🔬 Science 6d ago · Ethan Siegel

How to not overestimate the number of stars in the Universe

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How to not overestimate the number of stars in the Universe
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Here in our cosmic backyard, the Sun is the ultimate source of light, heat, and energy that powers life on our planet. It therefore only makes sense that we’d want to know, if the Sun is just an ordinary star like so many others in the Universe, how many of them there are within our cosmic horizon. Calculating the number of stars within the presently observable Universe is a daunting task to take on, but one that astronomers and cosmologists have risen to, and now have determined with only very

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