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1

I think this question might trigger more an open-ended discussion, than a definitive answer, but let me try my take on it. Firstly, Is it more likely that one of these collided with Jupiter itself at the head-on angle needed for the core-warping collision? In order to collide, a co-orbital configuration is more favourable than a orbit-crossing encounter at ...


4

That very much depends on the structure of the solids, i.e. whether they exist in the form of small dust, or ready-to-smash planetesimals. In any case, the available median dust mass for planet formation is about 158 $\rm m_{earth}$ (see Tychoniec et al., (2020)). If you leave all this mass as dust, without any gas interactions, the dust will not coalesce ...


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