Expanding Earth

Variable Radius

One problem mass increase solves is the edges of the continents - they fit perfectly in a smaller earth.  In the past, earth had less mass and a smaller radius.


This might have accounted for the enormous body plans of dinosaurs at the time - lower mass equals lower gravity.

Pangaea 

Pangaea the ancient supercontinent assumes a fixed planetary radius in time and maps several continental edges well.  But the remaining edges are lock-down fitted too, if we reduce the radius.

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