  In this article, the question of the nature of cold dark matter is approached
from a new angle. By invoking the Cauchy problem of relativity it is shown how,
under very precise astrophysical conditions, the Einstein general theory of
relativity is formally equivalent to the Ginzburg-Landau theory of
superconductivity. This fact lead us to suspect that the superconductivity of
gravitation ought to be a real physical process occurring in the outskirts of
galaxies. It is found that quantum mechanically gravity can achieve a type-II
superconductor state characterised by the Gizburg-Landau parameter
$\kappa=1.5$, and it is suggested that a probability flux of Cooper pairs
(quantum gravitational geons charged with vacuum energy) are directly
responsible for the flatness exhibited by the rotation curves in spiral
galaxies, as well as the exotic behaviour observed in galactic cluster
collisions. If this hypothesis proves correct, the whole phenomenon of dark
matter may count, after all, as another triumph for Einstein's theory of
gravity. The tension between gravitation and quantum mechanics is explored
further by a subtle consideration of the Hamilton-Jacobi theory of the
York-time action, providing additional motivation for the above line of
reasoning. In particular, Penrose's estimate for the rate of collapse of the
wavefunction is recovered, and connected to the instability of Misner space.
