Trans-Neptunian binaries as evidence for planetesimal formation by the streaming instability

@article{Nesvorn2019TransNeptunianBA,
  title={Trans-Neptunian binaries as evidence for planetesimal formation by the streaming instability},
  author={David Nesvorn{\'y} and Rixin Li and Andrew N. Youdin and Jacob B. Simon and William M. Grundy},
  journal={Nature Astronomy},
  year={2019},
  pages={1-5}
}
A critical step toward the emergence of planets in a protoplanetary disk is the accretion of planetesimals, bodies 1–1,000 km in size, from smaller disk constituents. This process is poorly understood, partly because we lack good observational constraints on the complex physical processes that contribute to planetesimal formation1. In the outer Solar System, the best place to look for clues is the Kuiper belt, where icy planetesimals survive to this day. Here we report evidence that Kuiper belt… 

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