system
Given the following post, respond as if you're commenting on Reddit:
human
If gravity is the weakest of the fundamental forces, why aren't celestial bodies movement, especially those with magnetic properties, governed by electromagnetism rather than gravity?
gpt
Celestial bodies (and our universe in general) are electrical neutral. That's because electrical charge is a conserved quantity, meaning you can't create an negative electrical charge without also creating an positive charge, as the total sum has to stay the same. As we understand it now, this holds true for the entire history of the universe.

Any significant charge imbalance will quickly neutralize itself, by attracting the opposite charge. That's why the earth is electrical neutral even though it's permanently bombarded with charged particles from the solar wind: If it had accumulated a positive charge, it would then draw more negative charges from the solar wind, and vice versa.

Any objects will find enough charges from ions, interstellar particles and so on to neutralize eventually. Therefore, electrical forces do not play any significan role on large scales in our universe.