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Old November 2nd 17, 03:09 PM posted to sci.astro.amateur
Gerald Kelleher
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Default The First Known Interstellar Comet

On Thursday, November 2, 2017 at 2:36:11 PM UTC, Chris L Peterson wrote:
On Thu, 2 Nov 2017 07:04:54 -0700 (PDT), Gerald Kelleher
wrote:

When Venus reaches its widest point after it emerges as an evening appearance it will then turn back in front of the Sun and move from left to right until it overtakes us and becomes a morning appearance once more.


What do "left" and "right" mean? If I walk outside today and look up
at the Sun


You look out at the central Sun and stationary Sun and not up. If you can't put the central reference for all motions in correct context and drop up/below or North/South (which are rotational terms) it is impossible to reference orbital motions to either the moving Earth, to the stationary Sun or to the other planets.

I don't blame you, you have a rotating celestial sphere in your head and can't adjust to the recognized motions of Venus and Mercury in their transition from an evening to a morning appearances which is to say from left to right of the Sun as seen from a slower moving Earth as the planet overtakes us or from right to left or a morning to evening appearance as the planet moves behind the Sun -

http://www.popastro.com/images/plane...ary%202012.jpg

Maybe somebody else will explain to you that we see the faster moving Venus and Mercury run their circuits around a stationary Sun much like Jupiter's satellites will move from left to right and then from right to left of their parent planet -

https://www.youtube.com/watch?v=FcrBAuLBXag