Centrifugal force is
 
        centripetal!
        Centrifugal force is space reaction o curvilinear movement. 
        But space has one single force, elementary and compositional force, centripetal 
        force. 
        Is centrifugal force centripetal?
        We consider a trial object, which executes a curvilinear movement around 
        a fixed point.
        The curvilinear movement eccentrically polarizes space and the center 
        of centripetal force which is formed outside the curve, on the line of 
        vector ray. The mass of the object, speed of the movement and ray, determine 
        the intensity of polarization. 
        This is the force which pushes the object to the outside, to the center 
        of centripetal force and which "disappears" when their centers 
        coincides - forces are in balance.
        Now, the object is imponderable, has rotation and its own centripetal 
        force (gravity) - moon.
        Let's assume an interpretation, when the speed of the moon on the trajectory 
        is changed.
        The increase of the speed equates the decrease of earth rotation, that 
        is, with decrease of terrestrial centripetal force. 
        The report of terrestrial and moon centripetal forces is changed, displacing 
        the centre of moon centripetal force to the outside, that is, the moon 
        gets a "centrifugal" force. 
        Upon speed decrease, the phenomena develop inversely. 
        Periodical inversion of the sense of centripetal force consists of oscillations 
        determining the stability of elliptic orbits. 
        This interpretation shows that in cosmos, bodies interact by their centripetal 
        forces - "gravitational".