A simple question of the chicken or the egg.
Or, in this case, the star dust or the star...
"Dust grains that form around dying stars and are ejected into the interstellar medium lead, after a life cycle spanning millions of years, to the formation of planets and are a key component of the universe's evolution. Scientists have found the materials that make up the building blocks of the universe are much more complicated than originally anticipated."link here.
take it easy ;)
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