: Astronomía: planetesimal

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planetesimal

Any of numerous small solid bodies in a protoplanetary disk that in some cases clump together to form planets but in other cases remain relatively small and become asteroids and comets. Similarly, Kuiper Belt Objects are probably the remnants of the planetesimals that formed the planets. (An Etymological Dictionary of Astronomy and Astrophysics, by M. Heydari-Malayeri, https://dictionary.obspm.fr/index.php?formSearchTextfield=planetesimal&formSubmit=Search&showAll=1)

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