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Was Jupiter’s grand tack due to dark matter

Sep 11, 2020
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Could planetary migration be due to dark matter concentrations

Could Jupiter’s grand tack been a result of an decrease of mass in the solar system due to an decrease in dark matter concentrations? If a dwarf galaxy merged with the Milky Way and its dark matter got ahead of its regular matter it might draw down the dark matter around it from the space around our solar system to keep its gravity well full. A wandering black hole that had lost most of its dark matter due to a previous encounter could also cause this effect. This would also have moved Venus and all of the planets closer to the sun at that time. As the dark matter distribution equalized everything would have returned to its previous orbits.
 
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Sep 11, 2020
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From Wikipedia
“The formation of giant planets is a more complicated process. It is thought to occur beyond the frost line, where planetary embryos mainly are made of various types of ice. As a result, they are several times more massive than in the inner part of the protoplanetary disk. What follows after the embryo formation is not completely clear.”

When a star goes nova its dark matter also flows out of the dissipating gravity well. Thus the concentration of dark matter is higher in the resultant nebulae. Over time this concentration would drop causing an inward migration of all the planets until equilibrium is reached. From this we can infer that dark matter is very viscous.
 
Oct 23, 2020
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Could planetary migration be due to dark matter concentrations

Could Jupiter’s grand tack been a result of an decrease of mass in the solar system due to an decrease in dark matter concentrations? If a dwarf galaxy merged with the Milky Way and its dark matter got ahead of its regular matter it might draw down the dark matter around it from the space around our solar system to keep its gravity well full. A wandering black hole that had lost most of its dark matter due to a previous encounter could also cause this effect. This would also have moved Venus and all of the planets closer to the sun at that time. As the dark matter distribution equalized everything would have returned to its previous orbits.
Planetary migration occurs when a planet or other body in orbit around a star interacts with a disk of gas or planetesimals, resulting in the alteration of its orbital parameters, especially its semi-major axis. Planetary migration is the most likely explanation for hot Jupiters: exoplanets with Jovian masses but orbits of only a few days.
 

Catastrophe

There never was a good war, or a bad peace
Feb 18, 2020
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The history of the Solar System is quite complicated already.
Is not dark matter (not totally accepted, it seems) going to throw the whole caboodle into frenzy?
Are the planets, are we, all partially dark matter?
Perhaps we all have a dark side?

Cat :)
 

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