Galaxies are truly fascinating entities

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In our own Milky Way,
Proxima Centauri, the closest star to our Sun, is over 4 light-years away.
Even Voyager 2, which was launched 50 years ago,
hasn't even traveled 1 light-day yet,
showing just how much of space is filled with empty voids.
Similarly, galaxies are mostly empty space.
Many argue that even if Andromeda and the Milky Way collide, nothing much will happen because there is so much empty space between them.
Some studies even suggest they won't merge into one but will simply pass each other by.
Perhaps because those empty spaces are so vast and distant,
they appear as nothing more than a single dot to the naked eye,
and even through high-quality optical telescopes, they just look like clusters of light in specific shapes.
Whenever I try to wrap my head around the universe and think about it,
I don't know how to even begin processing it because I'm just not smart enough.
When I look at the Theory of Relativity,
or things regarding light,
I just nod along, thinking "I guess that's how it is," but I don't actually understand it.
Regarding the rotation of galaxies,
I'd assume that the closer you are to the strong center like a black hole, the faster it rotates,
and the further away you are, the slower it would be.
But if it rotated like that, the shape would be ruined.
They say while the center rotates quickly,
the rotation remains constant from there to the edge.
That's also fascinating.
So, I'm just over here wondering what I should have for lunch tomorrow.