Re: Why the planets have apparent backward motion

[John F. Eldredge]

On Fri, 17 May 2013 10:25:00 -0700, The Starmaker wrote:

> The 'Brightness' control still doesn't help wrote:
>>
>> On Thu, 16 May 2013 10:53:42 -0700, The Starmaker
>> <star...@ix.netcom.com> wrote:
>>
>> >nu...@bid.nes wrote:
>> >>
>> >> On May 16, 12:18 am, oriel36 <kelleher.ger...@gmail.com> wrote:
>> >>
>> >> (snip)
>> >>
>> >> > How you get from an apple falling on the ground to planetary
>> >> > dynamics is quite a stretch so terrestrial ballistics does not
>> >> > scale up to motions on a celestial level and it is exceptionally
>> >> > foolish to believe it does.
>> >>
>> >> You get there with gravitation, the force that not only describes
>> >> ballistic motion near Earth's surface (falling apples, artillery
>> >> shells, etc.) but also neatly describes the motions of celestial
>> >> objects.
>> >>
>> >> > Scaling observations up from analogies like cars moving around a
>> >> > traffic island to planetary dynamics is a different matter or
>> >> > indeed the orbital behavior of the moon as seen from Earth or
>> >> > anywhere else.
>> >>
>> >> Flat out stoopid bullshit.
>> >>
>> >> You would have us believe that the planets are kept in their
>> >> courses
>> >> around the sun (and the moon in its course around Earth) because of
>> >> their tires' friction against an invisible road?
>> >>
>> >> If not, what do you think holds the planets (and moons) in their
>> >> courses?
>> >>
>> >> Mark L. Fergerson
>> >
>> >
>> >you mean What keeps me from falling up? Or what keeps the moon from
>> >falling up?
>> >
>> >i guess the same thing that keeps me from falling down..
>> >
>> >"Help, i fell down, i cannot fall up!"
>> >
>> >
>> >If I'm on the Moon...
>> >i can see the dark side of the Earth.
>> >
>> >If the moon revolves around the earth do i see the same dark side of
>> >the earth if i'm standing on the moon?
>> >
>> >The Moon only shows one face to the Earth. Fact or fiction? Or,
>> >science fact or science fiction fact. Is it the same face? Or a
>> >different face?
>>
>> It is the same face. And therein lies the absolute proof and truth
>> that the moon rotates on its axis.
>
>
>
> Ff it is rotationg, then the face rotates...which means the face is
> changing, it's not the same face. What proof and truth are you talking
> about?

The face rotates, but the length of time it takes to make one rotation
matches the length of time it takes to make one orbit around Earth. If
the moon were orbiting but not rotating, when it is half-way around its
orbit, the opposite face would be towards Earth than was true when the
orbit began.

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--
John F. Eldredge -- jo...@jfeldredge.com
"Reserve your right to think, for even to think wrongly
is better than not to think at all." -- Hypatia of Alexandria