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Geocentrism and Relativity

BrainHertz

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As I already stated above, a camera wouldn't give you a unique answer: if you stationed the camera in the vicinity of the Sun, you'd see the planets orbiting it in nice ellipses. On the other hand, if you placed the camera above the Earth, you'd see the Sun and planets doing the complicated dance that Washington posted links to above. If you were to measure stellar parallax, you'd find all the stars doing that same kind of dance too. Is that what you're looking for?

The reason that geocentrism doesn't work is because it requires the existence of a bunch of forces to make everything move that way, for which there is no mechanism. On the other hand, heliocentrism requires exactly one force, namely gravity, and requires it to work in porecisely the way that we know it to actually work.
 
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SpyridonOCA

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Has there been a scientific study that demonstrated the earth's rotation around the sun?
 
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SpyridonOCA

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Thus, using Newton's Law of Gravitation, we can essentially show that it is the Earth that orbits the Sun and not vice versa.

Does this provide an alternative explanation?:

 
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Washington

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If you're expecting to see a photo from outer space that would encompass the orbit of earth from above, the camera would have to be at least 16,400,000 miles above its orbit, and that's with a 160[sup]o[/sup] fish-eye lens. As a comparison, the Moon is only 238,600 miles from Earth. And even if you're only looking for a picture taken from above that only included the Earth and the Sun the camera would have to be about eight million miles above the Earth: 33 times the distance to the Moon.
 
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FishFace

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Is anyone able to disprove the claim that geocrentrism is possibly true, due to Einstein’s theory of relativity? I don't believe it is important either way, but it's worth thinking about.

Geocentrism isn't "possibly" true - it is true, as long as you measure from the right place. Equally, it's false if you measure from somewhere else.
As someone said, it would be just as true to say the universe revolves around my left nostril, but we use the sun because it makes the sums easier.
 
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BrainHertz

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Has there been a scientific study that demonstrated the earth's rotation around the sun?

Yes, there's a large body of work on this, but I honestly don't understand what else it is that you are looking for here. Can you elaborate on what kind of evidence would convince you?
 
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BrainHertz

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Does this provide an alternative explanation?:

<rolls eyes>. Not this guy again...

I've responded to quotes from this Dr. Bouw many times before, and every time I've looked into one of his claims that somebody else says something supporting geocentricity, it turns out to be bogus - so forgive me if I seem dismissive of anything he says. Do you have a reference to the original source of the claim?
 
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SpyridonOCA

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Yes, there's a large body of work on this, but I honestly don't understand what else it is that you are looking for here.

If, under the theory of relativity, geocentrism is equally as valid as the popular view, I'd like to know why the former is considered stupid or insane. I don't believe that the sun revolves around the earth, but neither have I seen evidence to the contrary.
 
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BrainHertz

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All of these are referring to the failure to detect an absolute frame of reference for the motion of light, which is no longer thought to exist. The claim that is being made here is that special relativity is false.

The evidence I've already pointed to which is not consistent with geocentricity is the motions of the planets (which otherwise require forces to make them move in strange ways, together with gravity somehow not applying to them) and stellar parallax, which also shows the stars moving in ways that cannot be explained in a geocentric model.

As has already been pointed out (many times) Tycho Brahe's model was developed because of his failure to observe stellar parallax, from which he concluded that the Earth was stationary. Since we now know that stellar parallax does exist, just at a level below the resolution of his pre-telescope instruments, we have ample evidence to discount his model.
 
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Washington

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In physics, the center of mass of a system of particles is a specific point at which, for many purposes, the system's mass behaves as if it were concentrated. The center of mass is a function only of the positions and masses of the particles that comprise the system.​
The barycenter (or barycentre; from the Greek &#946;&#945;&#961;&#973;&#954;&#949;&#957;&#964;&#961;&#959;&#957 is the point between two objects where they balance each other. In other words, the center of gravity where two or more celestial bodies orbit each other. When a moon orbits a planet, or a planet orbits a star, both bodies are actually orbiting around a point that lies outside the center of the greater body. For example, the moon does not orbit the exact center of the earth, instead orbiting a point outside the earth's center (but well below the surface of the Earth) where their respective masses balance each other. The barycenter is one of the foci of the elliptical orbit of each body. This is an important concept in the fields of astronomy, astrophysics, and the like​

Two bodies of similar mass orbiting around
a common barycenter. (similar to the 90 Antiope system)




Two bodies with a difference in mass orbiting around
a common barycenter, as in the Pluto-Charon system.




Two bodies with a major difference in mass orbiting around
a common barycenter (similar to the Earth-Moon system)




Two bodies with an extreme difference in mass orbiting around
a common barycenter (similar to the Sun-Earth system)
 
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SpyridonOCA

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There are geocentric answers to these concerns, most of which you've probably already seen. If we cannot know for certain, let us be kind to our geocentric friends.
 
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BrainHertz

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There are geocentric answers to these concerns, most of which you've probably already seen. If we cannot know for certain, let us be kind to our geocentric friends.

What does "kind" mean here?

And no, I haven't seen any remotely convincing response to this evidence which is consistent with a geocentric model. Can you elaborate?
 
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Paulos23

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There are geocentric answers to these concerns, most of which you've probably already seen. If we cannot know for certain, let us be kind to our geocentric friends.
If there where any practical use in a geocentric model of the solar system, agencies like this would be using them for calculating navigation and time. However, they are not because the geocentric model doesn't have any practical use, and that agency has been using the Sun centered model (with the Sun orbiting the center of our galaxy) for 170 years.

With 170 years of observations you think they would know what works best.
 
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FishFace

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How could this be possible? The earth's revolution and rotation about it's axis is observationally equivalent to the modified Tychonic system.

But completely fails to explain why on earth the stars wobble backwards and forwards, sustaining forces that should rip them apart.
 
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Frumious Bandersnatch

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How could this be possible? The earth's revolution and rotation about it's axis is observationally equivalent to the modified Tychonic system.
Richard you never did explain the seasonal variation in the rate the universe out the the farthest star whips around the earth each day.

You also failed to explain why satellites are launched eastward when possible.

You didn't explain how astronauts going to the moon look back and see the earth rotating beneath them or why according the geocentrism the Voyager space probes is now whizzing about the earth at superluminal velocites.

What provided the accelaration to get these things spinning around the earth and why doesn't it affect things like geostationary and retrograde satellites?

It would be possible to observe the earth rotating around the sun from outside the solar system just as we can observe the effects of extra-solar planets revolving around their stars.
 
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