Cosmic Dust

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A dense star field with dark, irregular dust clouds—where cosmic dust come from—obscures parts of the glowing stars in the Milky Way.
Starts With A Bang
Ask Ethan: Where does cosmic dust come from?
Dust is ubiquitous in the modern Universe, appearing in nearly all galaxies. But our cosmos was born dust-free. So where does it originate?
Ethan Siegel
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