system
Given the following post, respond as if you're commenting on Reddit:
human
Are galaxies neutrally charged?
gpt
Not necessarily, but the charge differential is so insignificant in proportion to galactic distances and local gravity that the electromagnetic force does not play a part in galactic trajectories.

Edit: There are many events that can cause galaxies to expulse matter, and in many of these, such as a black hole jet stream, solar wind propulsed by supernova etc. the matter ejected is ionized. Ions leaving a neutrally charged galaxy would cause a galaxy to be un-neutrally charged, so it's quite unlikely that any given galaxy is exactly neutrally charged.