[geocentrism] Re: (geocentrism) geostationary / geosynchrous sat.
- From: Mike <mboyd@xxxxxxxxxxxx>
- To: geocentrism@xxxxxxxxxxxxx
- Date: Wed, 27 Oct 2004 01:29:52 +0100
Hi Philip,
Welcome back :)
I'm no expert on what stars are visible when, but I think the
heliocentric and geostatic models must both predict the same stars in
the same positions otherwise it would be very easy to compare with
observation and there would be no discusion helio/geo discussion. The
observed relative motions are the same which ever frame of reference you
choice to consider stationary.
From the first hit when I googled "stars apparent motion"
http://www.phys.uri.edu/~chuck/ast108/notes/node8.html
> Some stars rise and set. Others are up all the time. These latter are
> called ``circumpolar''. Those which rise and set, rise at the same
> place on the horizon night after night, year after year. (Where they
> set doesn't change either). Those which rise in the NE set in the
> NW. (Think about that statement and try to visualize its meaning.)
> Those which rise (exactly) in the east, set (exactly) in the west.
> Those that rise in the SE set in the SW. (Think about this one, too.)
> They all appear to travel in circles, and, depending on where they
> are in the sky and where we are on the earth's surface, we see all or
> part or none of their circles. We see all of the circles of the
> circumpolar stars. We see half of the circles of those stars on the
> equator of the celestial sphere, less than half for those which lie
> south of the celestial equator, and more than half for those which
> lie north of the equator.
Philip wrote:
> The matter of orbital mechanics has captured me. I am not a star
> gazer, but it seems as I delve into this subject of astronomy, a
> question that has always been in the background is this. Why do we
> always see the same stars every night for the full 365 days of the
> year? Shouldn't the night sky of June be what we could not see
> because it was behind the sun of the day sky in December.
>
> If that sounds like a conundrum, put it another way. Right now today,
> I cannot see the stars that are in the sky back of the sun. But 6
> months from now they will should be my night sky view. Yet from what
> I remember, the big dipper is always in view every night. Am I
> missing something? This is from the heliocentric moving earth view
> point of course.
>
> On the other hand, if thecosmos with all its stars moved around a
> stationary earth, and only made an annual inclination deviation up
> and down for the seasons, seasons, then yes we would always see the
> same night time stars.
>
> Again, perhaps I missed something.
>
>
> Philip.
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