Planets are assembled from the ground up, beginning with millimetre-sized interstellar dust grains. Microgravity experiments suggest that centimetre-sized dust aggregates form from these smaller grains via collisional charging.
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Follette, K. Charge on collision. Nat. Phys. 16, 124–125 (2020). https://doi.org/10.1038/s41567-019-0741-z
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DOI: https://doi.org/10.1038/s41567-019-0741-z
