The self-rotation of the Earth solid inner core is analyzed to show the influence on the motion of the planet. Existing direction of the rotation gives new attracting force directed toward the Sun (~1011 N for the inner core only at this moment). The opposite direction of the self-rotation gives new rejecting force relative to our star. Corresponding similarity could be found in aerodynamics in the case of rotating or not rotating cylinder in the stream. The physical reasons for these results is based on the non-homogeneous gravity field of the Sun. Theoretically, the Earth could move toward the Sun during the millenniums (global warming) and contrary, out of the Sun, in the case of opposite self–rotation (ice period). Non-homogeneous gravity field of the Sun slows down angular velocity of the Earth in the case of existing self-rotation and accelerates the same one in another mentioned case.