  We argue that space-time properties are not absolute with respect to the used
frame of reference as is to be expected according to ideas of relativity of
space and time properties by Berkley - Leibnitz - Mach- Poincar\'{e}. From this
point of view gravitation may manifests itself both as a field in Minkowski
space-time and as space-time curvature. If the motion of test particles is
described by the Thirring Lagrangian, then in the inertial frames of reference,
where space-time is pseudo-Euclidean, gravitation manifests itself as a field.
In reference frames, whose reference body is formed by point masses moving
under the effect of the field, it appears as Riemannian curvature which in
these frames is other than zero. For realization of this idea the author
bimetric gravitation equations are considered. The spherically - symmetric
solution of the equations in Minkowski space-time does not lead to the physical
singularity in the center. The energy of the gravitational field of a point
mass is finite. It follows from the properties of the gravitational force that
there can exist stable compact supermassive configurations of Fermi-gas without
an events horizon.
