Arrokoth and the Formation of Snowman Worlds

In this episode we explore a 2026 study reframing Arrokoth as a product of gentle, streaming-instability–driven assembly rather than a hard-rock collision. Using soft-sphere modeling, two loose clumps fuse into a stable, contact-binary world, leaving few craters and a uniform organic signature. We discuss what this teaches us about how planets begin—quietly, efficiently, and dramatically—in a young solar system.

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