Re: Planet X: Moon SWIRL

As requested, from existing ZetaTalk:

    Spin is a phenomenon that occurs regularly in nature
    and is frequently observed on Earth, from the large 
    swirls that hurricanes form to the small tornadoes 
    in the middle of water going down the drain. The 
    fact that such a spin moves in different directions 
    when it is above or below the equator gives evidence
    that spin is affected by factors outside of itself. The 
    phenomenon of spin is observable when the object 
    in motion is not constrained. Air and water are 
    fluid, but spinning tops or figure skaters on ice also
    demonstrate the phenomena. The theoretical speed 
    of a spin is fastest toward the center of the spinning 
    object, a factor easily noted by comparing hurricane 
    wind speeds with those at the center of tornadoes. 
    But why the difference?

    Spin on the surface of the Earth reflects what is 
    occurring in the core of the Earth. If the Earth were  
    not rotating, its core moving to escape or pull toward
    other matter in the Solar System and beyond, then 
    spin would be affected only by the various 
    attractions or repulsion the spinning object itself 
    has to its immediate neighborhood. All objects on 
    the face of the Earth have these same influences 
    from the core of the Earth, but this is not evident 
    due to lack of fluidity or lack of motion. Spin in 
    an object develops slowly, and is only evident to 
    man when accumulated. Thus, water in a water 
    fall has spin, but the water at the bottom of the fall
    cannot affect the water at the top, so the spin is 
    not compounded. Water in a drain compounds the 
    spin at the top by affecting the path of least 
    resistance for the water at the top of the drain, and
    thus the little tornadoes in draining water.

    Spin occurs faster when the spinning object is 
    narrow as there are fewer factors to counter the spin.
    A large air mass such as is moving during a 
    hurricane is spread out over a larger area of the 
    core of the Earth, and thus the impetus to move 
    with the core is countered by the fact that one of the 
    outer edges, the one on the pole side, is lined up 
    over core parts that are moving slower than the 
    other outer edge, the one on the equator side. Thus
    small tops can spin faster for the given impetus than 
    large tops, and figure skaters find they can spin 
    faster by reducing their overall size by drawing 
    their arms in and hugging themselves.
        ZetaTalk™, Spin
            (http://www.zetatalk.com/science/s86.htm)