On Friday, July 20, 2018 at 3:48:16 AM UTC+9:30, Barry Schwarz wrote:
On Thu, 19 Jul 2018 07:01:27 -0700 (PDT),
wrote:

I will catch a lot of muck on this summise, but bare with me.

If I was blind folded, on a rotating platform, with guns in different directions and distances, what might I mistakenly assume?????????????(I am unaware of rotation) This is important to keep in mind.

Two firings at different times might seem to come from the same direction, or opposite if they occur at different distances.

Now to astronomy!

Our galaxy revolves, and moves through the universe, and therefore a similar optical slight of hand occurs!
Something which we '0bserve' now at (say) due north, might well be in another direction entirely, according to it's distance from us, and our circular motion.
Two bodies which appear to be in the same direction from us, may be nowhere near it (and never were)
Maybe the universal "picture' which we see, is a total hologram, due to the motions of the bodies (us and the "observed") and the finite properties of light

It's not a hologram but except for some very nearby objects, nothing
we see is currently where we see it. Everything we see is time
delayed and each object has its own delay. The result is a very
massive optical illusion.

Consider a telescope observer looking at the Great Red Spot very near
the edge of Jupiter's disk. It took the light over 32 minutes to get
to the observer.

In that time, Jupiter rotated almost 6% of it's day so the storm
probably rotated beyond the edge of the limb and is currently no
longer visible from Earth.

Similarly, in that time Jupiter moved 2.5*10^7 meters along its orbit.
As viewed from Earth, that is 8 arc seconds and Jupiter is currently
not even in the viewing field of the scope.

The bottom line is we do not see the objects at their current
location, only the light they emitted at a previous location. In many
(most?) cases, the gap between emission and observation is eons.

--
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Look further!
Galaxies which appear to be in the same direction, may be opposite (or anywhere)
depending on how far we rotate as the light from each travels here.
I would dearly love a geek (I am fairly computer clueless) to model this--
Milky Way rotating, with incoming light from galaxies at different distances.
Where would they "seem" to be, as to where they really are?