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  • Mercury in retrograde motion

    From [email protected]@21:1/5 to All on Thu Jan 20 10:15:02 2022
    The faster moving Mercury is currently overtaking the slower moving Earth as our two planets moving around the central Sun at the focus of the time lapse-

    https://sol24.net/data/html/SOHO/C3/96H/VIDEO/

    There are many things to remark upon and anyone can do it although it is all new and made possible by the satellite.

    I am glad that it will eventually make it into wider circulation, regardless of its origins in this newsgroup and the effort that went into streamlining the references and observations to make it a simple perceptive interpretation.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From =?UTF-8?Q?fred__k._engels=C2=AE?=@21:1/5 to All on Thu Jan 20 13:10:05 2022
    Smaller targets are harder to hit.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From StarDust@21:1/5 to [email protected] on Thu Jan 20 16:56:28 2022
    On Thursday, January 20, 2022 at 10:15:04 AM UTC-8, [email protected] wrote:
    The faster moving Mercury is currently overtaking the slower moving Earth as our two planets moving around the central Sun at the focus of the time lapse-

    https://sol24.net/data/html/SOHO/C3/96H/VIDEO/

    There are many things to remark upon and anyone can do it although it is all new and made possible by the satellite.

    I am glad that it will eventually make it into wider circulation, regardless of its origins in this newsgroup and the effort that went into streamlining the references and observations to make it a simple perceptive interpretation.

    Why is Earth slower moving?
    Bigger than mercury!

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From [email protected]@21:1/5 to All on Mon Jan 24 01:17:05 2022
    On an early dawn walk, any observer will see Venus shining brightly to the right of the Sun as a number of weeks ago, it would be seen as a twilight appearance to the left of the Sun. Mercury now is currently transitioning to the dawn appearance and the
    right of the Sun presently, although more elusive than Venus in its smaller circuit of the Sun-

    https://sol24.net/data/html/SOHO/C3/96H/VIDEO/

    No doubt there will be a lot of hype about virtual reality (metaverse) and no doubt some aspects of that endeavour will be worthwhile and productive, however, much like people like to visit the cinema or Disneyland without living there, they can always
    keep genuine observations with them like the sight of Venus today before returning to their daily business.

    https://www.theplanetstoday.com/

    The flighty individual will sell the individual a product yet nothing is required of the genuine observer and reader only their time and a small effort to get themselves accustomed to the proper use of technology to make their existence more intimate and
    abundant from the experience.

    It may be that even those presently engaged in magnification, photography and celestial sphere observing will see even their hobby lost rather than work towards expanding the exercise to include the observational context of solar system structure, cause
    and effect, larger celestial structures and so on.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Quadibloc@21:1/5 to StarDust on Wed Jan 26 23:00:33 2022
    On Thursday, January 20, 2022 at 5:56:29 PM UTC-7, StarDust wrote:

    Why is Earth slower moving?
    Bigger than mercury!

    No, that has nothing to do with it.

    The orbital period of a planet is determined solely by the semi-major axis
    of its orbit. As Kepler wrote (in book 5 of _Harmonices Mundi_):

    Sed res est certissima exactissimaque, quod proportio que est inter binorum quorumcunque Planetarum tempora periodica, sit pracise sesquialtera proportionis mediarum distantiarum, id est Orbitum ipsorum; attento
    tamen hoc, quod medium arithmeticum inter utramque diametrum elliptica
    Orbita sit paulo minus longiore diametro.

    But this thing is most certainly most exact, that the proportion
    which is between the temporal periods of any two planets is precisely
    the sesququadrate proportion between their distances, that is, their
    orbits, giving attention to this, that the arithmetic mean between the
    two diameters of an elliptic orbit is less than the length of its diameter.

    I could also mention the possibly apocryphal story of Galileo
    dropping a small and a large cannonball from the Leaning Tower of
    Pisa, but there are those in this group who would consider objectionable
    the suggestion that gravity has any connection with the orbits of the
    planets.

    John Savard

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From [email protected]@21:1/5 to All on Wed Jan 26 23:13:15 2022
    Mercury is now moving to a dawn appearance to the right of the stationary/central Sun-

    https://sol24.net/data/html/SOHO/C3/96H/VIDEO/

    As it shows more of its bright hemisphere the further from the Sun from our perspective, its phase brightens as it exits the range of the satellite camera. When it reappears moving in direct motion behind the Sun, it will show its light hemisphere, so
    will be fully dazzling as a spectacle in a number of months.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From [email protected]@21:1/5 to All on Wed May 18 10:15:34 2022
    https://sol24.net/data/html/SOHO/C3/96H/VIDEO/

    Unlike the slower moving outer planets which where the direct/retrograde motions were gauged against the stationary field of background stars seen from a faster moving Earth, we see Venus and Mercury move back and forth around the Sun.

    Those planets are moving between the slower moving Earth and central Sun in retrograde motion, something new and enjoyable for those who can feel it.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From [email protected]@21:1/5 to All on Sun May 22 01:40:58 2022
    https://sol24.net/data/html/SOHO/C3/96H/VIDEO/

    Observers in this newsgroup must be delighted to be able to put relative motions into proper perspectives for putting the structure and motions of the planets in a Sun-centred system into proper order.

    Those who are stuck in intellectual pretence which relies of a stationary field of background stars in a celestial sphere configuration (RA/Dec) are hardly aware of the advances which come with satellite imaging free from daily rotational influences
    like the unfortunate folk over the sci.astro.research living off an untenable framework from planetary motions-

    https://groups.google.com/g/sci.astro.research/c/8bu81e_g7Wk

    Mercury is currently disappearing from view as its dark hemisphere faces us more and more as it passes the slower moving Earth at our mutual closest point.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Gerald Kelleher@21:1/5 to All on Sun Sep 3 00:16:52 2023
    https://sol24.net/data/html/SOHO/C3/96H/VIDEO/

    The only means to account for retrograde motion in terms of the faster-moving Venus and Mercury is to organise a framework where their back-and-forth motion around our parent star is as close as possible to the analogy where Jupiter's moons run back-and-
    forth around their parent planet-

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

    https://www.youtube.com/watch?v=w2uCtot1aDg

    There is so much irrelevance out there taking the name of astronomy that only some people, albeit very few, have a sense of the importance of the partitioning of direct/retrograde motions by relative motions seen from Earth and through different
    frameworks that account for them.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Gerald Kelleher@21:1/5 to All on Sat Sep 9 10:43:12 2023
    Such a delightful sight to see Mercury overtake the Earth in retrograde motion or, in contemporary language, Mercury moves faster than the annual change in the position of the stars thereby giving the same type of appearance as the slower-moving planets
    seen from Earth-

    https://sol24.net/data/html/SOHO/C3/96H/VIDEO/

    Simple, effective, and thoroughly enjoyable.

    It complements what the original Sun-centred astronomers did while modifying their perspectives as seen from a moving Earth using alternative frameworks-

    "Now what is said here of Jupiter is to be understood of Saturn and Mars also. In Saturn these retrogressions are somewhat more frequent than in Jupiter, because its motion is slower than Jupiter's, so that the Earth overtakes it in a shorter time. In
    Mars they are rarer, its motion being faster than that of Jupiter, so that the Earth spends more time in catching up with it. Next, as to Venus and Mercury, whose circles are included within that of the Earth, stoppings and retrograde motions appear in
    them also, due not to any motion that really exists in them, but to the annual motion of the Earth. This is acutely demonstrated by Copernicus . . ." 1632, Dialogue Concerning the Two Chief World Systems

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)