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Is the Moon hollow? I saw a program that claimed when we landed on the Moon, the crash caused a ringing that lasted for hours, leading some to believe that the Moon is hollow.

27 Answers

Originally Answered: Is our moon hollow?

Both Scott Soloway and C Stuart Hardwick talk about the seismic evidence, but there's ways to tell it's not hollow without even that.

Newton's laws tell us what the orbital period of a body should be given its mass and distance from the Earth. If the moon were much less massive, the current orbit wouldn't be so stable (at the velocity it is traveling it would probably be in a much more eccentric orbit).

Another way to tell what the mass of the moon is : tides. If the moon were hollow it wouldn't kick up the tides that it does. There wouldn't be enough stuff there.

Well, wait, what if the moon were hollow anyway? The mass by itself doesn't tell you that, it's true, but we know the approximate density of rock and if the moon were hollow it simply would not weigh what it does, given what its' made of. It would be a lot lighter.

Essentially, if the moon were a hollow shell the moon would have to be made of something really, really dense, to make up the mass that would be lost by having all that space inside. And there isn't any evidence that it's made of any material like that.

On top of all that there's the seismic evidence. So no, the moon isn't hollow.

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• • • • How do flat earthers explain the moon phases? How can a New Moon or a Full Moon happens, according to them?

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Originally Answered: Is the moon hollow? I saw a program that claimed that when we landed on the moon, the crash caused a ringing that lasted for hours, leading some to believe that the moon is hollow.

Image: Deluded artist’s conception of a “hollow moon” chock full of alien spaceship docks, alien living quarters, alien communication facilities, alien sauna baths, alien tennis courts, alien casinos, and alien seafood buffets. In reality, the only hollow spheroids at issue here are the heads of the people who cook up this half-baked crap.

And I saw a program about a red nosed reindeer who helped guide Santa’s sleigh through the fog on Christmas Eve to bring toys to all the good little boys and girls of the Earth . . . . There was even a snowman in it who sang a lot and sounded like Burl Ives. I’m sure that one is true, too.

There is not a reputable astronomer, planetary astronomer, selenologist (scientist specializing in lunar studies), or even anyone who managed to get through a high school physics class who believes that the moon is hollow. If it were, it would not have sufficient mass to cause the tides on Earth that we have been measuring since humans first put to sea thousands of years ago. The math just doesn’t work out.

When you see things like that “program,” and none of the talking heads is an accredited scientist in the relevant field, then you should have a pretty good idea that it is about as likely to be true as the story about the reindeer I mentioned above. Look online to see if there are real scientific papers in real scientific journals by real scientists coming to that conclusion. If the answer is “no,” then you can pretty much write off the “program.”

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Originally Answered: Is the hollow moon theory true?

No the hollow moon theory is not true.

In one of my answer that meteor is going to visit our solar system and it may not surprise us that looking to size of the asteroid/ meteoride, we may have two moons.

This does not indicate that moons are hollow and can easily fit in the orbit of any Planet.

One of Quoran has ruled out the possibility but he did not ask me as to why I made such bold possibility .He also did not work out the possibility before ruling out.

At the G of 6.66 the force is just enough to give 1.027 km/ sec speed.

This is equal to the fall of any object only under the force in which M1 M2 and kms are one unit.

In the space if our earth is the nearest object to be hit then there would be huge destruction but if it just spares then the earth gravitational pull is not going to leave that body and the free fall speed if is 8km per second then it is to become moon.

People forecast destruction in exaggeration but they do not see that there could be some wonderful thing.

For the multi millennium if it has not happened does not show the impossibility of any new thing to happen.

If it is “ Never” to happen then what is reasonable answer from the cosmologists/ astronomists.

So moon is not hollow.

It's texture is curiously less dense and that is why it keeps on floating around the earth sometime pulling the already compromised earth.

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Originally Answered: Is the Moon hollow?

Of course it's hollow. Edgar Rice Burroughs figured that out ages ago.

The first manned spaceship to reach the moon discovered a world hidden from human eyes – a world of flying women, of comical cities, and of semi-human monsters who fought for power across these eerie Lunar plains. These men must battle the conflict between themselves and their alien hosts amidst the high adventure that waited for the rescue of the moon maid. After a century of war, all Earth was at peace at last, and friendly communication had been established with the planet Mars. Interplanetary co-operation made possible what neither world had been able to achieve alone — ships to bridge the distance between the worlds. But The Barsoom, the first Earth-Mars vessel, was treacherously sabotaged, thrown off course, and obliged to make an emergency landing on the moon. And there, beneath the craters, at the interior of the arid satellite, the crew found a world cut off from the rest of the solar system, inhabited by warring The Moon Maid monsters, and the decaying remnants of an ancient civilization.

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Related QuestionsMore Answers Below

• • • • I can see the moon during the night and the day. Do people on the other side of the world have no moon to look at?

      • Do moons have moons?

      • Does the Moon look the same from every part of Earth?

      • In which places on earth does the moon look the biggest?

      • Is the Moon really uninhabitable?

Originally Answered: Is the moon hollow? I saw a program that claimed that when we landed on the moon, the crash caused a ringing that lasted for hours, leading some to believe that the moon is hollow.

I perfectly remember that, in this time, scientists were very astonished on the very long time seismic waves were ringing, as if they had hit a bell (actually it was some Apollo hardware which was deliberately crashed in order to create seismic waves).

The explanation however has nothing to do with any conspirationist theory (since none of them existed yet at this time). Most probably the mascons deflected the waves, and anyway remember that the moon is 4 time smaller than Earth, and 64 times less voluminous. So seismic waves can do several times the turn before being damped. This happens on Earth too, but seismic waves are damped before a second or third reflection. In more, Earth has a partially molten interior, further damping waves, while the Moon is mostly entirely of solid rock.

The internal structure of the Moon could not be determined, since only one seismometer was installed in this time. Having a network of them could be one of the most compelling motives for sending several small landers in different places. I even suggest: one lander, and several “shells” hitting in an appropriate pattern. Much less expensive.

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Originally Answered: Is the moon hollow?

It can't be simply because of

GRAVITY

and I'm going to give a wiki citation about "a hollow Earth" which also encompasses the case of a hollow planet... let's be serious... a hollow planet? come on! :)

Another set of scientific arguments against a hollow Earth or any hollow planet comes from gravity. Massive objects tend to clump together gravitationally, creating non-hollow spherical objects we call stars and planets. The solid sphere is the best way in which to minimize the gravitational potential energy of a physical object; having hollowness is unfavorable in the energetic sense. In addition, ordinary matter is not strong enough to support a hollow shape of planetary size against the force of gravity; a planet-sized hollow shell with the known, observed thickness of the Earth's crust, would not be able to achieve hydrostatic equilibrium with its own mass and would collapse.

Someone on the inside of a hollow Earth would not experience a significant outward pull and could not easily stand on the inner surface; rather, the theory of gravity implies that a person on the inside would be nearly weightless. This was first shown by Newton, whose shell theorem mathematically predicts a gravitational force (from the shell) of zero everywhere inside a spherically symmetric hollow shell of matter, regardless of the shell's thickness. A tiny gravitational force would arise from the fact that the Earth does not have a perfectly symmetrical spherical shape, as well as forces from other bodies such as the Moon. The centrifugal force from the Earth's rotation would pull a person (on the inner surface) outwards if the person was traveling at the same velocity as the Earth's interior and was in contact with the ground on the interior, but even the maximum centrifugal force at the equator is only 1/300 of ordinary Earth gravity.

The mass of the planet also indicates that the hollow Earth hypothesis is unfeasible. Should the Earth be largely hollow, its mass would be much lower and thus its gravity on the outer surface would be much lower than it is.

Source: Wikipedia on "Hollow Earth"

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Originally Answered: Is the moon hollow?

No, the moon is not hollow. That story sounds odd. Who would have heard the moon ringing?

The Apollo missions placed seismometers on the moon's surface and from these we have observed quakes. These measurements would clearly have shown whether the moon is solid or hollow.

However, we could still determine the interior state of the moon without visiting it. Let's just look at the math.

The mean radius of the moon is 1737100 meters

The mass of the moon is 7.347x10^22 kilograms

We can confirm the radius by observation and the mass by gravitational effects.

density is equivalent to mass divided by volume and the volume of a sphere is 4/3*Pi*R^3

So, that gives us an average density of the moon of 3.35 g/cm^3

Looking up average densities of rock tells us the average rock has a density of around 2.6 g/cm^3.

That means that the moon, even if it was solid rock all the way through would not be heavy enough to justify its density. From this we can infer that the center of the moon is either rock that is crushed by the mass above it to a greater density or a heavier material, such as metals. It is certainly not hollow.

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Originally Answered: Is the moon hollow? I saw a program that claimed that when we landed on the moon, the crash caused a ringing that lasted for hours, leading some to believe that the moon is hollow.

Ratholes

It's easy to be pulled to an extreme. For example, “The moon ‘rings’, therefore it is hollow, and therefore, the whole thing is an artificial sphere.” The other extreme is, “The volume of the Moon is V, the mass is M, which makes the density D, which is a density that sounds solid, so there's nothing to do with the word hollow has anything to do with the moon.”

Mascons

What we know is that the moon contains “mascons”, or concentrations of mass, so the moon isn't exactly uniform. I also recall the center of mass of the moon isn't exactly in the geologic center of the moon which is what you'd expect from a molten ball of Theia spray cooling down, so, something isn't exactly symmetrical.

Lava Tubes

There are theories of lava tubes which sounds like a hollowness feature.

So somewhere under the “mapped surface” of the moon probably exists a cavern or hollowness of some sort.

For entropy and randomness to produce a sphere of absolute uniformity by any definition sounds as suspicious as “the moon is completely hollow”. Hollowness probably exists. We need to find it, and measure it.

A Definition of Hollowness

Instead of using a terms like Hollow or Solid, perhaps we define a measurement, sort of like density, that can have a mathematical definition.

Hollows filled with Dust and loose soil … I'd want to count them, too.

A surface created by a solid material against vacuum or granular material is the starting point, and the hollowness is measured by the cubic volume of the space in meters minus one meter times the surface area to the mapped surface.

Bayesian Math

Calculations could begin today … where is the most hollow portion of the moon, and, by that same general definition, where are the most probable hollows based on known measurements that lack of mascons may mean presence of a Hollow?

Stigma of Hollow Moon

We've got to get away from the stigma of the hollow moon theory if we're going to encourage scientists to research the hollow regions where moon settlements could most successfully be built.

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Originally Answered: Is the Moon hollow?

Don't take the term "ringing" too literally.

(Image courtesy NASA)

These are seismograph records documenting the impact of the Apollo 13 S-IVB stage into the Moon.[1] This is what we call "ringing" -- an oscillating waveform that starts sharply and fades away. Ringing is a common phenomenon that occurs when a system (in this case, the Moon) receives a brief, relatively intense input, which is often called a pulse, or animpulse.

All kinds of dynamic systems can display ringing.

Nobody with any training would ever take seismic ringing as evidence of the Moon being hollow. My best guess is that somebody took a technical term wildly out of context and came up with a really silly interpretation.

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[1] The seismic station that made this measurement was placed on the Moon during the Apollo 12 mission.

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Originally Answered: Is the moon hollow? I saw a program that claimed that when we landed on the moon, the crash caused a ringing that lasted for hours, leading some to believe that the moon is hollow.

Hollow? Yes. Definitely. On the dark side of the moon the crust is upwards of 30 miles in thickness enough to absorb a pretty sizable impact and distribute that energy around it. Nothing could withstand that sort of bombardment without that type of redundancy. That’s why the moon does not rotate. It’s not a tidal lock it’s a defense position. Why people cannot bring themselves to know it as truth is beyond me. Intelligence is nothing of you are not a free thinker. The Earth is obviously extremely valuable and hasn’t suffered anything near an deep space object impacting the planet. The moon is the offensive lineman moving around the Earth deflecting all potential objects. That’s why you never hear about it until it safely passes Earth. When the mokn disappears there is no media coverage AT ALL not even to educate (lol) people who may wonder where the moon is? Silence. The moon is positioned where it needs to be and my CONSPIRACY theory is the really huge moon is a projection by the dark moon that accompanies the moon we see and that’s why the color is off and it has that erily look to it. That’s the stand in. You know because you will see it haul ass and dip out of sight and pop up the next night nice and bright where it should be. Truth.

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Originally Answered: Is the moon hollow? I saw a program that claimed that when we landed on the moon, the crash caused a ringing that lasted for hours, leading some to believe that the moon is hollow.

The technical aspects have been addressed elsewhere. Linguistically and culturally:

“leading some to believe that the moon is hollow” does not imply that the programme-maker believed the moon to be hollow.

Extract from report of interplanetary expedition to investigate Earth-people’s culture:

“the limited travel range of the earth-creatures has led some (of these creatures) to believe that the Earth is flat; special-interest societies have been formed to…”

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Originally Answered: Is the moon hollow? I saw a program that claimed that when we landed on the moon, the crash caused a ringing that lasted for hours, leading some to believe that the moon is hollow.

Abstract from Popular Science magazine …Though the Apollo lunar modules were built for the sole purpose of landing two men on the surface of the Moon, their usefulness didn't end after ascending from the lunar surface. NASA used the spent spacecraft for science, directing these modules for controlled crashed into the Moon. These crashes caused moonquakes, and scientists measured the vibrations moving through the Moon and found it rings like a bell

.But something interesting happened on Apollo 12. After Pete Conrad and Al Bean landed at the Ocean of Storms on November 14, 1969, they left the lunar surface 142 hours into the flight. Eight hours later, they were reunited with Dick Gordon in the command module and sent their spent lunar module back to the Moon. It impacted about 40 miles away from the Apollo 12 landing site with the force of one ton of TNT. The resulting shockwave built up and peaked in just eight minutes. Then it took an hour to fully dissipate.

Something similar happened on Apollo 13. The S-IVB impacted the Moon 85 miles from Apollo 12’s ALSEP — CMP Jack Swigert joked at the time that it was the only thing on that mission to go right. It hit with the force of 11 and a half tons of TNT. This translated to a seismic impact peaked after seven minutes with shockwaves 30 times greater and four times longer than those from Apollo 12’s LM impact.

The vibrations from these two impacts lasted longer than scientists expected, far longer than any equivalent vibrations last on Earth. It was almost as if the Moon was ringing like a bell. This strange result forced scientists to think differently about the Moon and its composition.

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Originally Answered: Is the Moon hollow?

Moon cannot be hollow. Every stars and planets and every natural satellites are not hollow. Just like a layers of cake, Moon too have layers.

CRUST-The outermost layer of the moon. this surface is cratered due to impact of large meteorites.rocky crust is covered with loose regolith (soil).

MANTLE-It is the layer beneath crust. it is about 1000 km thick. It is the region where moonquakes occur. it is divided into three parts namely upper mantle, middle mantle and lower mantle.

CORE-it is divided into two parts namely outer core and inner core .Outer core is semi solid whereas inner core is solid in state

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Originally Answered: Is the moon hollow? I saw a program that claimed that when we landed on the moon, the crash caused a ringing that lasted for hours, leading some to believe that the moon is hollow.

It is…no ifs,ands,or buts about it….Its just common sense…if the moon was the size a car or airplane and you hit it with a hard & fast enough object & it did the same thing like in space,then you would know the answer…wouldn't you??

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Originally Answered: Is the moon hollow? I saw a program that claimed that when we landed on the moon, the crash caused a ringing that lasted for hours, leading some to believe that the moon is hollow.

The Moon Revolves Around The Earth One Revolution Daily!

We know the moon revolves around the Earth once each 27.3 days (moon orbital period)… So the current theories tell us that the moon moves daily around 88000 km to complete his orbit (2.41 million km) in 27.3 days…

Let's me provide another description for this same Moon Cycle, by using the planets data analysis provided that…

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No physics Law I'll violate

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The final observatory motion I'll perform

So, I provide another theory for this same moon Cycle & Motion, and I follow the same rules and produce same motion…. Why my theory is mistaken?

Let's see this theory as following

My Theory for the Moon orbital period (27.3 days)

The moon apogee radius = 406000 km

The lunar apogee circumference = 2.58 million km (mkm)

Earth rotates daily around her axis with all this circumference (supposition)

i.e.

Earth rotates daily holding with her the moon orbit!

That means the moon orbit rotates with the Earth daily around the Earth Axis complete rotation (360 degrees)

Let's see that deeply:

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The outer line of the moon apogee orbit radius 406000 km is the base line of the Earth motion, the Earth uses this line as a road to walk on it.

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The Earth body connected with the moon orbit completely as her own body and the Earth moves with this orbit as her vehicle

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The Earth rotates the Moon orbit on the outer line till the moon orbit rotates completely (360 degrees) and at this point the Earth daily rotation be completed.

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For that reason the moon orbit circumference = the Earth motion distance daily.

So, why the moon himself doesn't rotates with the Earth daily?! If his orbit rotates completely with the Earth daily rotation?!

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The Moon himself rotates completely in the opposite direction to his orbit motion, and for that the moon doesn't be taken in his orbit motion with the Earth

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The Moon rotates his orbit completely daily, and just because the Moon rotates in the opposite direction of his orbit motion direction, the moon has the ability to catch his position in the sky, otherwise he would be taken by his orbit rotation with the Earth..

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The Moon can't move always with the apogee orbit radius (406000 km) for that reason his total distance daily is not equal the Earth motion, but only 2.41 m km that because the moon rotates with the average orbit and not the apogee orbit

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The apogee orbit motion with the Earth = 2.58 mkm but the moon motion in the opposite direction = 2.41 mkm, So the difference is 0.17 mkm, which causes The Daily Actual Displacement For The Moon…

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The Actual Moon Displacement Daily Is 88000 km, which equal 1/2 of the velocities difference. That because the opposite directions of the motions causes friction for the moon pulling process by his obit velocity, resulting an actual distance = 1/2 the velocities difference.

This simple explanation gives us some answer for the question

Why the moon orbit apogee circumference = The Earth daily motion distance?

i.e.

Why The moon apogee radius = 1/366 of the earth orbital distance?!

Gerges Francis Papers

Please read my papers

Copernicus-Kepler Model Modification:

http://vixra.org/abs/1711.0133

The Earth moves with light velocity relative to the sun

http://vixra.org/abs/1709.0331

The solar system geometry (Part No. 3)

https://www.academia.edu/3389723...

The solar system geometry ( Part 2)

https://de.slideshare.net/Gerges...

or

(Do all solar planets move in the same frame)

https://www.linkedin.com/in/geor...

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Originally Answered: Is our moon hollow?

Things as big as moons and planets can't be hollow. The reason that they're round (spherical) in the first place is that the pressure from all the weight of an entire planet crushes everything "down" toward the center, leaving a sphere. If there was a hollow spot, a zillion tons of hot rock would slam down and fill it up. If the moon was hollow, it would immediately collapse into a solid sphere.

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Originally Answered: Is the moon hollow? I saw a program that claimed that when we landed on the moon, the crash caused a ringing that lasted for hours, leading some to believe that the moon is hollow.

Look, is way too easy. You can check it indirectly:

Go to a dock, and put yourself in the line of water, tied to some pillar. Wait. If the moon is hollow, it won’t have the mass (and gravity) needed to influence the huge mass of water on earth, so there will be no tides.

So, if you are still alive a few hours later, the the moon is hollow. If not, well…

Let’s say that, one way or another, there will be one less believer in a hollow moon. A net gain.

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Originally Answered: Is the moon hollow?

This did NOT come from a NASA site. It comes from several non-science web sites. Just pick a phrase from above and google it. For instance

http://www.google.com/#q=On+one+...

What's more, what does "On *ONE* of the Apollo 12 flights..." mean? Exactly how many Apollo 12 flights were there? Hint: one.

I wouldn't waste my time with this silliness if I were you.

1.9k views · View 20 Upvoters

Originally Answered: Is the moon hollow? I saw a program that claimed that when we landed on the moon, the crash caused a ringing that lasted for hours, leading some to believe that the moon is hollow.

It is still not sure whether the moon is hollow, but when a space craft lands on any surface, a very large force is applied on the ground. This forces are sometimes so huge that they cause seismic waves to get generated and thus cause a phenomenon similar to that of an earthquake.

Like you, I also saw a program on Discovery channel that companies are trying to make spacecrafts to go to dark side of the Moon because they believe that there may be previous elements such as Uranium and Titanium inside the surface of moon. But this denies the fact shown by the show you saw.

All these programs are just based on assumptions because we don't no much about these heavenly bodies.

Thank you.

Hope the answer helped.

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Originally Answered: Is the moon hollow? I saw a program that claimed that when we landed on the moon, the crash caused a ringing that lasted for hours, leading some to believe that the moon is hollow.

The Earth rings for a while every time something hits it too. The Earth also rings after earthquakes, volcanic eruptions, landslides, and large explosions. Solid rock is highly resonant at low frequencies, which is why the earthquake that occurred in Mineral, VA, USA in 2011 was able to be felt by people in Toronto, ON, Canada, over 500 miles away.

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Originally Answered: Is the moon hollow? I saw a program that claimed that when we landed on the moon, the crash caused a ringing that lasted for hours, leading some to believe that the moon is hollow.

I always thought that the explanation was that the Moon is too small to have a liquid core, which damps much of the seismic wave energy in the Earth.

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Originally Answered: Is the Moon hollow?

"Ringing" does not imply something is hollow. The Earth "rings" whenever an earthquake occurs: from a large quake, the ringing may cifcle the Earth several times. Seismometers left by the Apollo astronauts observed the shock wave when the Lunar Lander was crashed into the moon in exactly the same way. No hollowness is needed anywhere.

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Originally Answered: Is the moon hollow? I saw a program that claimed that when we landed on the moon, the crash caused a ringing that lasted for hours, leading some to believe that the moon is hollow.

NO. No it’s not hollow. How do I know this ?

Consider the rigidity of the material and the cumulative crushing strength of gravity due to the moons own mass. NO it’s not hollow

On a microscopic level the moon may well ‘ring’ after an impact. Being hollow would reduce rather than amplify this.

NO the moon is not hollow.

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Originally Answered: Is the moon hollow? I saw a program that claimed that when we landed on the moon, the crash caused a ringing that lasted for hours, leading some to believe that the moon is hollow.

How can an object which is hollow even exist , moon was formed exactly as earth was formed which is clouds of gas and dust collapsing around a centre by gravitational forces , though there is a theory that that moon was formed out of collision of earth and another planet and that region of earth that broke off of Atlantic Ocean

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Originally Answered: Is the moon hollow? I saw a program that claimed that when we landed on the moon, the crash caused a ringing that lasted for hours, leading some to believe that the moon is hollow.

No not hollow, Bit like a round gruyere cheese. The cavernous type.

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Originally Answered: Is the moon hollow? I saw a program that claimed that when we landed on the moon, the crash caused a ringing that lasted for hours, leading some to believe that the moon is hollow.

The ringing was President Nixon ringing the astronauts for a chat.

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Originally Answered: Is our moon hollow?

No. All seismic evidence indicates that the moon's solid core is iron rich and likely surrounded by a layer of molten iron.

However, there is growing evidence that some of the heads around here are.

623 views · View 8 Upvoters

Related Questions

• • • • How do flat earthers explain the moon phases? How can a New Moon or a Full Moon happens, according to them?

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https://www.quora.com/Is-the-Moon-hollow-I-saw-a-program-that-claimed-when-we-landed-on-the-Moon-the-crash-caused-a-ringing-that-lasted-for-hours-leading-some-to-believe-that-the-Moon-is-hollow

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