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A planets distance
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by micro_code
on 2006-04-13 03:22:12
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Hi... I am a new here but i wanna ask something we know that planets rotating by circullar moves and its provide by the SUN gravity... but sometime sun have an electromagnetic hurricane and that impact is unbalanced gravity... so if sun have gravity problem then its impact is a planets movement is been changed (even its a very small number) and if that happen the planets revolution is changed too... (may be its crush) how about your opinion based on theory ? 
Ai strike back! "Ippen Shinde Miru?" |
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Re: A planets distance
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by
on 2006-04-13 08:44:30 |
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Important to the understanding of the planetary orbits is the fact that they are NOT circular at all. They are elliptical, and have wobbles in them. The wobbles come about when planets pass close to each-other. One other point I would like to make is that NOTHING is nature can avoid entropy, even the rotation of the earth! Of course all orbits are ultimately either decaying or increasing. The "electromagnetic hurricane" that you speak of is called Solar Wind. Yes, solar wind carries momentum. Yes, momentum effects orbital trajectories. No, the earth isn't going to fly off into space because of it. The fact that the planets are still here after 4 or so billion years is due to the fact that there is a long-lasting equilibrium in their combined orbits, accounting for the momentum impacted by solar wind. I should point out that not only massive particles carry momentum. Even photons, having zero rest mass, carry momentum! (see: The Photoelectric Effect) 
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Re: A planets distance
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by Cless Alvein
on 2006-04-13 14:19:24
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And besides, solar wind particles are so excessively tiny that they will not have any appreciable impact on the Earth's momentum. The sun's "problem" is not as big as you think. Their electromagnetic properties are what causes Aurora Borealis, but this also has very little impact on the Earth's magnetic field, which is huge compared to the individual particles. This is comparable, perhaps, to worrying that a person who breathes extra hard will deplete the Earth's oxygen supply. |
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Re: A planets distance
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by
on 2006-04-15 06:51:21 |
if i'm not mistaken the earth is protected from the solar wind by the earth's magnetosphere 
'Que sera, sera, Whatever will be, will be The future's not ours to see,Que sera, sera' |
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Re: A planets distance
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by micro_code
on 2006-04-15 07:35:34
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Thats rather clear now... thanks...
Ai strike back! "Ippen Shinde Miru?" |
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Re: A planets distance
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by
on 2006-04-15 11:53:07 |
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if i'm not mistaken the earth is protected from the solar wind by the earth's magnetosphere correction: the surface of the earth is protected from part of solar wind by the magnetosphere. many ions screaming towards the earth are deflected away by the magnetosphere. no remember what you know about the coulomb (or ANY) force from basic physics: for every action, there is an equal and opposite reaction. if the earth pushes away an ion, the ion pushes away on the earth, too. so, this observation about the magnetosphere is irrelevant to the argument of potential decaying orbits due to solar wind.
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