[defrost]

> Imagine if the celestial spheres have a particular electromagnetic relationship with the Earth

The kind that falls away with square of the distance, where Saturn is far enough away that light takes > hour to travel?

This is very much a [ ... ] and so astrology argument.

https://www.youtube.com/watch?v=98Ya3F6jVFM

[pyinstallwoes]

No, the kind that fills up the entire universe with filaments.

Literally the universal Indra's net:

https://en.wikipedia.org/wiki/Birkeland_current

[defrost]

Birkeland currents flow following magnetic field lines.

The Earth's magnetosphere is shaped by solar winds, rounded on the sunside extending 6-10 x Earth radius with a longer tail opposite the sun that extends up to 1,000 x Earth radius.

The Earth's radius is very small compared to the 1 AU Earth distance from Sun and smaller again compared to the distances between planets.

So, rather than "filling the entire universe" the currents you've linked flow through a magnet field that rapidly dwindles with the inverse square of distance and neither the electric currents nor the magnetic field reach to another planet (nor vice versa).

[pyinstallwoes]

Plasma. It's everywhere.