Tangentally, I came across this preprint today about sensible definitions for planets, as IAU doesn't actually call exoplanets "planets", and there's some uncla

Tangentally, I came across this preprint today about sensible definitions for planets, as IAU doesn't actually call exoplanets "planets", and there's some unclarity re hydrostatic equilibrium ("how round") and especially the "clearing the path" / orbital dominance Quantitative Criteria for Defining Planets (UCLA) https://arxiv.org/abs/2407.07590 https://arxiv.org/abs/2407.07590