The solar system and the hypothetical planet return

WHAT IF the solars system didn’t lose Hades/ fifth gas giant and was stable and theia didn’t crash in the earth instead the earth captured a small rocky object and Vulcan was actually real and Planet 9/X Planet 10 and Tyche was also real and ever planet have a stable orbit and no chaotic rotation or orbit.

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Comment what you thought and theory would be if the solar system wasn’t chaotic