> Among the remaining mysteries, Yusef-Zadeh is particularly puzzled by how structured the filaments appear. Filaments within clusters are separated from one another at perfectly equal distances — about the distance from Earth to the sun.

Sounds like the wake of shipping lanes, the ships even follow regulations to stay a safe distance away from one another, though they really should do something about those older engines that mess up the landscape for everyone with the wakes. If that's not a sci-fi story yet, it probably should be!

I wonder what those actually are, though.

It's actually a plot point in The Three-Body Problem.

Oh yeah, Cixin Liu's books are pretty good! Having your craft leave trails like that behind would be really bad in the context of those books, though.

Looks almost mycelial to me.