“Cosmic butterflies” are supernovas. Supernova remnants themselves are extremely rare to find.
Supernovas do in fact interact with each other, or they would not all be dancing together, like magnets.
Birkeland currents align the exact same way, becoming twisted together like magnetized rope. New cosmology with correct interpretations grows strong, because public taxpayers hate wasting hundreds of billions on gravity and dark matter “science.” Electricity produces cosmic magnetism and vice versa.
The distant past was like it is now, with extremely strong magnetic fields shaping and forming stars and galaxies. Nothing mysterious at all.
Magnetic shocks are caused when a moving object encounters very thin but vast plasma filaments. Filaments magnetically confine the plasma containing relativistic accelerated charged particles. Supernovas produce electric shocks and accelerate cosmic rays by electricity. Electric currents actually do flow between neighboring supernovas when the magnetic field is strong enough for ideal conditions in space.
Gravity and dark matter is the failing of understanding