  Einstein general theory of relativity (GTR) accounted well for the precession
of the perihelion of planets and binary pulsars. While the ordinary Newton law
of gravitation failed, a generalized version yields similar results. We have
shown here that these effects can be accounted for as due to the existence of
gravitomagnetism only, and not necessarily due to the curvature of space time.
Or alternatively, gravitomagnetism is equivalent to a curved space-time. The
precession of the perihelion of planets and binary pulsars may be interpreted
as due to the spin of the orbiting planet ($m$) about the Sun ($M$)\,. The spin
($S$) of planets is found to be related to their orbital angular momentum ($L$)
by a simple formula, \emph{viz}., $S\propto \,\frac{m}{M}L$\,.
