Comparison between a fast moving Black hole based Cometary gas cloud (G2) around Sagittarius-A and vast moving Ball lightning and micro Comets on Earth, pushed by a self produced Fermion Gas tail. According to Q-FFF Model.
see also: The Massive Stars Orbiting Sagittarius A.
http://www.astrophysicsspectator.org/topics/milkyway/SagittariusAMassiveStars.html
What we did not know about SAG-A, is that the mysterious gas cloud G2 seems to be the start of a dual BH based Herbig Haro system close to the Sag-A black hole, leaving young stars and old dual HH jets behind.