According to Quantum FFF Theory, we live inside one of a specific number of Charge Parity symmetric entangled copy universes coming out of a huge ( massless Axion/Higgs rigid string black hole nucleus = Dark Matter). All copy string particles are guided by long distance (holographic) multiverse entanglement and transformable by mutual collision into all SM particles and monopole bosons or massless oscillating Axion/Higgs vacuum particles (Dark Energy) , responsible for the Casimir effect and half of all other SM semi pressure forces.
see also:
Non Inertial Dark Matter Black Hole Galaxy Hierarchy according to Quantum FFF Theory.
http://vixra.org/pdf/1804.0138v4.pdf
Proplyds some with plasma tail propulsion or Globulettes in Crab nebula (@ Tiia.Grenman: LTU.se)
see also: Dusty globules in the Crab Nebula ?
T. Grenman1, G. F. Gahm2, and E. Elfgren1
https://arxiv.org/abs/1610.08449