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Astronomical considerations

  • 06-06-2022 10:21am
    #1
    Orion402
    Registered Users Posts: 408 ✭✭


    The etymology of considerate/considerations, reveals something about the person inspecting or reading observations-

    " late 14c., "to fix the mind upon for careful examination, meditate upon," also "view attentively, scrutinize; not to be negligent of," from Old French considerer (13c.) "reflect on, consider, study," from Latin considerare "to look at closely, observe," probably literally "to observe the stars," from assimilated form of com "with, together" (see con-) + sidus (genitive sideris) "heavenly body, star, constellation"

    https://www.etymonline.com/word/considerate

    There is always room for those who have only known astronomy as a magnification and an identification exercise while discussing the types and range of equipment, however, the higher reasoning faculties find satisfaction in a more organised view of the motions of the Earth, solar system structure and on to larger structures such as the galaxy itself and the unknown structures beyond this. In the opposite direction, there is the relationship between the motions of the Earth and the Earth sciences of biology, climate and geology. There is also the geometric structure of objects themselves and why our planet is awash with a particular geometry making it a special focus of attention.

    It happens that the breaking of old habits arrives with something new and exciting, so this is why the imaging represents something fairly straightforward to consider-

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

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


    It would not be surprising if I could no longer present how the satellites of Jupiter as they run a circuit of their parent planet nicely help readers appreciate how Venus and Mercury runs their smaller and faster circuits around our parent star as seen from a slower moving Earth further away from our central Sun. I am not going to complain as some considerate readers will enjoy what is in front of them, not just because it is satisfying but also because it is new. To highlight this, I supply the perspective of Galileo, also an observational astronomer, who did not distinguish the direct/retrogrades of the planets depending on whether they are moving faster or slower than the Earth-

    " 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


    In a world that is full of contention, this perspective comes from the heart as it appeals to the heart and is therefore delicate and tough whereas the mind can be fickle.



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