Shadesmar- you can WALK to the other planets. It’s a pretty far ways away (at least days, if not more), but you can go to Shadesmar, walk in the directions where it says “The Expanse of the Vapors” and it runs into Scadrial . In Shadesmar all of that empty space doesn’t really have any human interaction, so it doesn’t really have an aspect in the cognitive realm, so all of that place gets shortened immensely. Whenever a planet has enough thinking life on it that’s it’s considering it a planet, it drops into Shadesmar.
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