January 4, 2017
gravitomagnetism, Jefimenko, Heaviside, disk galaxy, angular momentum
We found  that the key for many cosmic events lays in gravity, which is very well explained by gravitomagnetism, as suggested by O. Heaviside and further developed as a causal and coherent theory by O. Jefimenko. The angular momentum of spinning objects is transmitted to the surroundings by gravity, and form the rings of Saturn and the disc galaxies. In this paper, we analyze what happens with the gravity fields of collapsing stars. It is found that not only the mechanical angular momentum is regulating the orientation of disc galaxies. The magnetic-like component of gravity, which is velocity-dependent, is found to create forces that are consistent with the conservation of angular momentum. However, the retardation of the gravity fields by the speed of light, which is velocity-dependent, is found to cause a discrepancy between the mechanical angular momentum and the transmitted gravitational angular momentum.