Sylvain9595's latest activity
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SSylvain9595 replied to the thread Undergrad Unexpected findings in need of an explanation (retrograde motion of Mars).I won't be able to post during the next three days but when I come back I will open a new thread with a better definition of the...
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SSylvain9595 replied to the thread Undergrad Unexpected findings in need of an explanation (retrograde motion of Mars).No, only the one in the middle is on the loop (like the real observation). The two others happen before and after the loop.
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SSylvain9595 reacted to DaveC426913's post in the thread Undergrad Unexpected findings in need of an explanation (retrograde motion of Mars) with
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OK, I feel that the problem is insufficiently defined for me to be able to address it, so I will step back and defer to others. -
SSylvain9595 replied to the thread Undergrad Unexpected findings in need of an explanation (retrograde motion of Mars).Yes, but triple conjonctions are very rare compared to double ones. But there is the same problem for double ones.
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SSylvain9595 replied to the thread Undergrad Unexpected findings in need of an explanation (retrograde motion of Mars).My bad, I should have written : "How can a multiple (usually double, but sometimes triple) Earth-planet-star conjunction occur during a...
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SSylvain9595 replied to the thread Undergrad Unexpected findings in need of an explanation (retrograde motion of Mars).I am illustrating the problem : october 19th is the only precise moment when mars can be viewed at that precise position in our sky and...
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SSylvain9595 replied to the thread Undergrad Unexpected findings in need of an explanation (retrograde motion of Mars).No : in my animation, at the precise moment we see Mars positioned at "conjunction 2", the lines are not parallel as I have shown you...
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SSylvain9595 replied to the thread Undergrad Unexpected findings in need of an explanation (retrograde motion of Mars).Yes, I know that.
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SSylvain9595 replied to the thread Undergrad Unexpected findings in need of an explanation (retrograde motion of Mars).Yes of course. My question is how the heliocentric model accounts for this observation. It is flawed only for my first question...
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SSylvain9595 replied to the thread Undergrad Unexpected findings in need of an explanation (retrograde motion of Mars).Look at this triple conjunction of Mars with Pollux during this 2024-2025 retrogradation : source ...
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SSylvain9595 replied to the thread Undergrad Unexpected findings in need of an explanation (retrograde motion of Mars).Dear forum members, I have another question for you (but perhaps I should start a new thread?): How can a multiple (usually double, but...
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SSylvain9595 replied to the thread Undergrad Unexpected findings in need of an explanation (retrograde motion of Mars).Everything is clear for me now, thanks.
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SSylvain9595 reacted to PeterDonis's post in the thread Undergrad Unexpected findings in need of an explanation (retrograde motion of Mars) with Like.
The path of Mars in the sky has nothing to do with how far Mars is from Earth. The loop in your image does not show that Mars is closer...
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SSylvain9595 replied to the thread Undergrad Unexpected findings in need of an explanation (retrograde motion of Mars).That's it.
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SSylvain9595 replied to the thread Undergrad Unexpected findings in need of an explanation (retrograde motion of Mars).The loops of my animation are "pointing" (yellow dot) towards outer space, whereas the ones empiricaly observed from earth are pointing...
