  Gravity theory is the basis of modern cosmological models. Thirring-Feynman's
tensor field approach to gravitation is an alternative to General Relativity
(GR). Though Field Gravity (FG) approach is still developing subject, it opens
new understanding of gravitational interaction, stimulates novel experiments on
the nature of gravity and gives possibility to construct new cosmological
models in Minkowski space. According to FG, the universal gravity force is
caused by exchange of gravitons - the quanta of gravity field. Energy of this
field is well-defined and excludes the singularity. All classical relativistic
effects are the same as in GR, though there are new effects, such as free fall
of rotating bodies, scalar gravitational radiation, surface of relativistic
compact bodies, which may be tested experimentally. The intrinsic scalar (spin
0) part of gravity field corresponds to "antigravity" and only together with
the pure tensor (spin 2) part gives the usual Newtonian force. Laboratory and
astrophysical experiments for testing new predictions of FG, will be performed
in near future. In particular observations with bar and interferometric
detectors, like Explorer, Nautilus, LIGO and VIRGO, will check the predicted
scalar gravitational waves from supernova explosions.
