explain the concept of gravitional field in space and its effects on our universe?i want to know the clear concept of gravitional field in...

It is indeed one of the reasons the LHC at CERN was built:
to find the Higgs boson.

The Newtonian idea is that for
some reason (no one knows) all masses exert a pulling force on each other, for every
mass in the universe.

The Einsteinian idea is that space is
distorted by a mass. You have surely seen the model of a flat, stretched, infinitely,
endlessly elastic rubber sheet with a massive sphere at its center. Put a very small but
massive sphere in the center. A neutron star. Increase the mass but make it much smaller
(and denser). The dent in the rubber is very narrow and deep. For a black hole the mass
can be finite (measurable) but the depth of the dent is infinite. This is a black hole
gravity well. Try now to imagine the same situation but in 3D.