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Old 13-November-2008, 12:42 PM
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Default The Expansion of Ganymede

Question: Why do people ignore peer-reviewed science?



"The bright terrain formed as Ganymede underwent some extreme resurfacing event, probably as a result of the moon's increase in size". -- Prockter, L.M., Icing Ganymede, Nature, Volume 410, Pages 25-27, 2001

Collins et al. (1999) agree that the formation of the grooved terrain on Ganymede was likely the result of post-formation "global expansion".

Collins, G.C., Pappalardo, R.T., & Head, J.W., Surface Stresses Resulting From Internal Differentiation: Application to Ganymede Tectonics, Lunar and Planetary Science XXX, 1695, 1999

"Researchers now believe that Ganymede's more youthful-looking half could be due to a crust that stretched--as has happened in the past few million years on Europa--rather than any sort of icy volcanism, as many had assumed." -- Richard. A. Kerr, 2001

Kerr, R.A., Jupiter's Two-Faced Moon, Ganymede, Falling Into Line, Science, Volume 291, Number 5501, Pages 22-23, 2001

"Since planets and moons did not pop into existence at their current size, everyone agrees they must have expanded at some point in their history." -- Dennis McCarthy, biogeographer/geoscientist, 2005

"Ganymede's grooved terrain likely formed during an epoch of global expansion..." -- Michael T. Bland and Adam P. Showman, 2007

Bland, M.T., and Showman, A.P., The Formation of Ganymede's Grooved Terrain: Numerical Modeling of Extensional Necking Instabilities, Icarus, Volume 189, Issue 2, Pages 439-456, Aug 2007

Martin, P., et al., Why Does Plate Tectonics Occur Only On Earth?, Physics Education, 43, Pages 144-150, 2008

Adams, N., Ganymede Video, Youtube
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Old 13-November-2008, 12:53 PM
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Total Science, would you like to spell it out for us, rather than make us guess at the point you're making?
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Old 13-November-2008, 12:56 PM
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Total Science, would you like to spell it out for us, rather than make us guess at the point you're making?
Well let me ask you a question, did you look at the peer-reviewed science posted above or did you ignore it?
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Old 13-November-2008, 12:57 PM
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Total Science appears to believe that many (all?) planets/moons expand over time.
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Old 13-November-2008, 01:09 PM
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Well let me ask you a question, did you look at the peer-reviewed science posted above or did you ignore it?
I read what I could access.
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Old 13-November-2008, 01:31 PM
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I read what I could access.
And what conclusion did you draw after reading multiple corroborating sources published in peer-reviewed scientific journals such as Nature and Science?
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Old 13-November-2008, 01:36 PM
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And what conclusion did you draw after reading multiple corroborating sources published in peer-reviewed scientific journals such as Nature and Science?
That there's reasonable evidence that Ganymede and Europa have expanded.
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Old 13-November-2008, 01:47 PM
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That there's reasonable evidence that Ganymede and Europa have expanded.
Nice to meet you...
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Old 13-November-2008, 01:52 PM
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So which people are ignoring peer-reviewed science in your mind? And which peer-reviewed science do you think they're ignoring?
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Old 13-November-2008, 02:00 PM
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So which people are ignoring peer-reviewed science in your mind? And which peer-reviewed science do you think they're ignoring?
In my experience on other popular science forums, this peer-reviewed science is either ignored, ridiculed, censored, or conveniently hidden under the label of "pseudoscience."
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Old 13-November-2008, 02:12 PM
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If Ganymede had a global liquid ocean which then froze, during the freezing the ice will first expand, and then contract, as the temperature drops. Certainly some astonishing cracking will result. If there is an occasional large impact, then there will be melting and re-freezing, perhaps moon-wide. There is plenty of room in conventional physics for modest expansion and contraction on Ganymede, given these conditions. It's that, at least at present, we can't have a geologist walking around on the surface going "Oh, I see what happened!"
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Old 13-November-2008, 02:21 PM
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If Ganymede had a global liquid ocean which then froze, during the freezing the ice will first expand, and then contract, as the temperature drops. Certainly some astonishing cracking will result.
Well no one has ever observed this alleged ocean and science is supposed to be about observation.

Quote:
If there is an occasional large impact, then there will be melting and re-freezing, perhaps moon-wide.
Impacts cannot account for the amount of surface growth observed.

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There is plenty of room in conventional physics for modest expansion and contraction on Ganymede, given these conditions.
Any room for immodest expansion?

Quote:
It's that, at least at present, we can't have a geologist walking around on the surface going "Oh, I see what happened!"
We don't need to because we have photographs.
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Old 13-November-2008, 02:22 PM
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And what conclusion did you draw after reading multiple corroborating sources published in peer-reviewed scientific journals such as Nature and Science?
Wait a sec. You have presented some material and have some obvious reason to do so. This means they are giving you some conclusion. How about giving us your interpretation of them first?

Without that, what you are asking is, not only a set of opinions, but analysis of others' works, and a dump of the collective knowledge of those who have had years of study in the areas involved. That sounds like too much for a discussion board.
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Old 13-November-2008, 02:29 PM
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Moved from Q&A to ATM since the question asked is not seeking a factual answer and seems to have an ulterior motive.
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Old 13-November-2008, 02:40 PM
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Moved from Q&A to ATM since the question asked is not seeking a factual answer and seems to have an ulterior motive.
If anyone has an ulterior motive, it's you for moving the thread to "against the mainstream" when clearly Nature and Science are mainstream publications.
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Old 13-November-2008, 02:41 PM
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The EE theory (theory? idea?) IS ATM.
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Old 13-November-2008, 02:42 PM
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The EE theory (theory? idea?) IS ATM.
Ganymede is not Earth. The expansion of Ganymede is quite mainstream as demonstrated by multiple corroborating sources published in mainstream peer-reviewed scientific journals like Nature and Science.

So I have to ask the opening question again: why do people ignore peer-reviewed science?
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Old 13-November-2008, 02:43 PM
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Are you saying EE an EG are two completely separate functions?
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Old 13-November-2008, 02:45 PM
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Are you saying EE an EG are two completely separate functions?
I'm saying Ganymede is not Earth and everyone who's studied it accepts the mainstream fact that Ganymede is expanding.
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Old 13-November-2008, 02:46 PM
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If anyone has an ulterior motive, it's you for moving the thread to "against the mainstream" when clearly Nature and Science are mainstream publications.
Being published does not mean being accepted.

Anybody with some good facts and ideas can be published. That does not mean those facts and ideas have merit when it comes to accepted science.

The whole idea of being published is to put out the idea to see if it has legs. Many do not.
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Old 13-November-2008, 02:48 PM
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Being published does not mean being accepted.

Anybody with some good facts and ideas can be published. That does not mean those facts and ideas have merit when it comes to accepted science.

The whole idea of being published is to put out the idea to see if it has legs. Many do not.
The idea that Ganymede has maintained a fixed-size is so absurd and so against the mainstream that it has never been published.
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Old 13-November-2008, 02:50 PM
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I am not saying Ganymede is fixed. Your interpretation of why is what I'm arguing against.
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Old 13-November-2008, 02:52 PM
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The idea that Ganymede has maintained a fixed-size is so absurd and so against the mainstream that it has never been published.
I am not specifically talking about Ganymede, I am referring to your comment about what mainstream science is.
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Old 13-November-2008, 02:57 PM
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Quote:
Originally Posted by Total Science View Post
Question: Why do people ignore peer-reviewed science?
We hardly ignore it, we just read it correctly, unlike you.

Quote:
Originally Posted by Total Science View Post
"The bright terrain formed as Ganymede underwent some extreme resurfacing event, probably as a result of the moon's increase in size". -- Prockter, L.M., Icing Ganymede, Nature, Volume 410, Pages 25-27, 2001

Collins et al. (1999) agree that the formation of the grooved terrain on Ganymede was likely the result of post-formation "global expansion".

Collins, G.C., Pappalardo, R.T., & Head, J.W., Surface Stresses Resulting From Internal Differentiation: Application to Ganymede Tectonics, Lunar and Planetary Science XXX, 1695, 1999
Did you actually read the stuff you link to? The expansion phase was during a limited period when Ganymede was in its differentiation period, i.e. the creation of a metal core, a rocky mantle and an ice/water outer layer.

Quote:
Originally Posted by Collins et al
The differentiation of Ganymede would have affected the surface by radial expansion and by changes in the tidal and rotational distortion of the body, which are to a first order similar to the changes expected for a body in orbital recession.
Clearly, they are talking about an epoch long long ago, no growing Earth theory for Ganymede.

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"Researchers now believe that Ganymede's more youthful-looking half could be due to a crust that stretched--as has happened in the past few million years on Europa--rather than any sort of icy volcanism, as many had assumed." -- Richard. A. Kerr, 2001

Kerr, R.A., Jupiter's Two-Faced Moon, Ganymede, Falling Into Line, Science, Volume 291, Number 5501, Pages 22-23, 2001
Yes, and that is still going on, but the stretching does not come from a growing inside, it comes from tidal workings on the icy layer. For example, the cycloidal marks on Europa are now well explained by tidal flexing. This is the same process.

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"Since planets and moons did not pop into existence at their current size, everyone agrees they must have expanded at some point in their history." -- Dennis McCarthy, biogeographer/geoscientist, 2005
This is such a stupid comment, I can hardly believe you link to it. A growing Earth page, not really mainstream peer reviewed, but anywhooooo. Naturally, during the creation of the solar system the planets "grew" in that they obtained more mass through inelastic collisions in the primordial cloud. This is NOT expansion.


"Ganymede's grooved terrain likely formed during an epoch of global expansion..." -- Michael T. Bland and Adam P. Showman, 2007

Bland, M.T., and Showman, A.P., The Formation of Ganymede's Grooved Terrain: Numerical Modeling of Extensional Necking Instabilities, Icarus, Volume 189, Issue 2, Pages 439-456, Aug 2007
[/quote]

Dunno, where zou got the quote from Bland & Adam, but the next link has exactly NOTHING to do with an expanding Ganymede, but again with a the time of differrentiation. Naturally, there can be a time that the inner part expands because of extreme heating, which I guess would occur during differntiation.

You really need to come up with more convincing evidence that the Earth and the planets are expanding.
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Old 13-November-2008, 03:02 PM
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Did you actually read the stuff you link to? The expansion phase was during a limited period when Ganymede was in its differentiation period, i.e. the creation of a metal core, a rocky mantle and an ice/water outer layer.
Clearly it's you who have reading comprehension difficulties.

"Researchers now believe that Ganymede's more youthful-looking half could be due to a crust that stretched--as has happened in the past few million years on Europa--rather than any sort of icy volcanism, as many had assumed." -- Richard. A. Kerr, 2001

Exactly what part of "rather than any sort of icy volcanism, as many had assumed" don't you understand?
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Old 13-November-2008, 03:18 PM
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Exactly what part of "rather than any sort of icy volcanism, as many had assumed" don't you understand?
So, they ruled out volcanism, why does that rule out other possibilities like plate techtonics, tidal forces and others?
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Old 13-November-2008, 03:20 PM
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I think few people really grasp tidal forces. Perhaps this is part of the reason for belief in an EG.
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Old 13-November-2008, 03:28 PM
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I think few people really grasp tidal forces. Perhaps this is part of the reason for belief in an EG.
It's obviously not that simple. I can assure you tidal forces are well understood.
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Old 13-November-2008, 03:29 PM
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So, they ruled out volcanism, why does that rule out other possibilities like plate techtonics, tidal forces and others?
If you had read the opening post you would know the answer to that question. Plate tectonics does not exist on Ganymede.

Martin, P., et al., Why Does Plate Tectonics Occur Only On Earth?, Physics Education, 43, Pages 144-150, 2008
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Old 13-November-2008, 03:44 PM
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That there is evidence for expansion on Ganymede doesn't mean there is evidence for expansion on Earth.

It also doesn't mean that the expansion of Ganymede is in anyway connected to your own ATM mechanism for expansion on Earth.
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