[KronisLV]

> 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.

[hoseja]

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

[KronisLV]

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.