An invented graph or curve for planets as thrown
out materia from the Sun along x-axis.
Horizontal axis in the figure versus vertical axis
as D4 - d-degree 4, radailly outward from the sun: 'nuclei' of small, tight planets, versus
D3, d-degree 3, tangential axis: heavy masses, gas planets.
(?)
The equation of 2nd degree for such a curve?
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