In a fractal spacetime, the absence of a gravitational Meissner erect is th
ought of as ordering space as a crystal, at both a microscopic and a macros
copic scale. A gravitational Meissner erect keeps a wormhole open and penet
rable and, in the same context, a gravitational superconductor levitates in
an external gravitomagnetic field, an external gravitomagnetic field induc
es quantised vortices in a gravitational superconductor and gravitational r
otons in a superfluid, and the planetary systems are self-organised as supe
rconducting structures.