To understand it, you have to go back to the way dark matter helps
form galactic structures.
Not exact matches
The remnants of its spiral
structure can still be seen — the former
galactic bulge now
forms the «eye» of the penguin, around which it is still possible to see where the galaxy's pinwheeling arms once were.
Past computer modelling have shown that
galactic bars and rings can be
formed by gravitational interactions, and such
structures in the Milky Way's core even may be related to interactions with our largest neighbor, the Andromeda Galaxy.
The arrangement of circular
forms connected by thin strands appears in other areas of physics — related to unimaginably huge
structures such as
galactic jets, which emanate from black holes at the centres of many galaxies.