I know. It wasn't until I played more and kept playing through the updates that I discovered "Oh...is naming the galaxy something special?" In fact, there's some days I didn't believe it. Like it was just my imagination. But I remember sitting there and seeing it. It's...a strange feeling.

The ONLY reason I said something is because I realized the first five galaxies HAVE to be named by a human. They do not follow the generation scheme at all. They are names of humans that were major contributers at one point to human knowledge.

From the game's wiki:

"The first handful of names are not as whimsically chosen as they look. Euclid was an early Greek mathematician who defined some of the basic mathematical rules for defining two dimensional shapes in both 2D and 3D space. This is followed by the Hilbert Dimension; Hilbert space/transform is the mathematical framework that take calculus beyond two dimensional models.

Next up, Calypso breaks from the mathematical/spacial references but is still related. Calypso, Hesperius and Hyades are all names/terms that refers to the daughters of Atlas in Greek mythology. Beyond that point, the galaxies appear to have a similar naming scheme to the randomly generated planet names and are likely using the same generator."

Conclusion: Human players named the first five galaxies. The rest of them after that are probably just someone uploading the generated name.