Formation of the Moon: A Vibrating History

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Discussion Overview

The discussion revolves around the formation of the Moon and the possibility of it still vibrating as a result of its formation process. Participants explore the implications of historical impacts on the Moon's structure and the phenomenon of reverberation detected during lunar experiments.

Discussion Character

  • Exploratory
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • Some participants propose that the Moon could still be vibrating due to the molten blob released during its formation.
  • Others argue that the Moon is tidally locked to the Earth, which likely dampened any significant vibrations over time.
  • One participant suggests that large coherent vibrations would dissipate quickly, similar to the polhode motion of a GP-B gyro.
  • Another participant mentions that the Earth absorbs some vibrations from the Moon, contributing to its stabilization.
  • There is a claim regarding the Moon being hollow based on reverberation data from lunar missions, with references to various sources supporting or debunking this idea.
  • Some participants express skepticism about the hollow Moon theory, citing the credibility of sources and the nature of the vibrations detected.

Areas of Agreement / Disagreement

Participants generally disagree on the interpretation of the Moon's vibrations and the hollow Moon theory. While some find the idea of a hollow Moon plausible based on historical data, others firmly reject it, citing the nature of the vibrations and the credibility of sources.

Contextual Notes

Limitations include the dependence on the interpretation of historical data and the credibility of various sources referenced in the discussion. The discussion does not resolve whether the Moon is hollow or the implications of its vibrations.

verdigris
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If something hit the Earth billions of years ago and caused a molten blob to be released from it,and this blob settled into a spherical shape,after vibrating a lot,could the moon still be vibrating because of a formation process like this?
 
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I guess it could, but I don't think it is. The moon is tidally locked to the earth, which probably damped-out all of that. The moon does oscillate back and forth (librations), but those are due to the eccentricity of its orbit.
 
Even if completely isolated in space, it seems unlikely such a large coherent vibration would last long before being distributed among other degrees of freedom and ultimately just radiated as heat. Much like the polhode motion of a GP-B gyro.
 
Layman's terms: The Earth absorbs some of the vibrations of the moon, anf the moon is stabilized.
 
verdigris said:
If something hit the Earth billions of years ago and caused a molten blob to be released from it,and this blob settled into a spherical shape,after vibrating a lot,could the moon still be vibrating because of a formation process like this?

The reason I was interested in this thread is because there was some information received during the moon walks and experiments that suggested the moon is hollow. The pings, or whatever method discovered this phenomenon, showed reverberation taking place in the moon's interior reaches.

Was the reverberation incorrectly diagnosed or is the moon actually hollow?
(death star?:devil: )

Some more legit and less legit (majority) references:

http://www.geocities.com/area51/hollow/8827/moonfacts.html

http://forum.physorg.com/index.php?showtopic=2410

Bad Astronomy: (debunks the idea)

http://www.bautforum.com/showthread.php?t=18596

This one's right out there:

http://www.redicecreations.com/specialreports/2006/01jan/moon.html

This one asks "Is the moon hollow or made of swiss cheese"

http://www.abovetopsecret.com/forum/thread30059/pg1

Here's where the idea may have come from...

"...when the Apollo 13 mission dropped a tank (fuel or oxygen?) on the Moon a seismometer showed that the Moon vibrated for over 3 hours."

http://bigbangblasted.mywowbb.com/forum1/8.html

This could go on indefinitely so I'll stop now.
 
Last edited by a moderator:
Thanks for the list baywax. I'll check them out sooner or later.
 
Baywax, it should not be difficult to judge from the credibility of the sources you listed that the correct answer is that the moon is not hollow.

Nothing about the fact that vibrations were detected when a tank was dropped suggests the moon is hollow. IIRC, the Earth reverberated for weeks after that tsunami last year.
 
russ_watters said:
Baywax, it should not be difficult to judge from the credibility of the sources you listed that the correct answer is that the moon is not hollow.

Nothing about the fact that vibrations were detected when a tank was dropped suggests the moon is hollow. IIRC, the Earth reverberated for weeks after that tsunami last year.

Thanks Russ. That probably solves the misconception, myth and waste of energy that's been put into this story.
 

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