This is very cool! The recently released Explorer's Guide for Star Trek Adventures covers very similar territory also in a "grounded in science" way.If you want a real simulation of planet creation; look no further then Architect of Worlds!
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Architect of Worlds: Comprehensive Rules for Worldbuilding — Ad Astra Games
THE GALAXY IS YOURS WITH ARCHITECT OF WORLDS . We live in a golden age in astronomy. Fifty years ago, our understanding of our own planetary system was just being upended by NASA missions. We could only guess at worlds circling other stars. Now we know of thousands of exoplanets, with hundreds mowww.adastragames.com