The inner sun said not to be bright but TWILIGHT as the sun is cover in smoke. Read "Olaf Jensen" book "The smokey God".

Additional adds...
Gravity
The best scientific argument against that of a hollow Earth or any hollow planet is 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.

Seismic information
Although not visually observable, the core of the Earth is observable via vibrations (primarily from earthquakes) passing from one side of the planet to the other. Using this method, geologists have been able to postulate the structure of mantle, outer core, and inner core known today. A hollow earth would behave entirely differently in terms of seismic observations.

Visual evidence
The deepest hole drilled to date is the SG-3 borehole which is 12.3 km (7.6 miles) deep, part of the Soviet Kola Superdeep Borehole project; thus, visual knowledge of the Earth's structure extends that far.

I said on the top post " how much evidence can we debunk it or made plausible." I will debunk vs proof. Too see how much it would weight on the scale of plausible to myth.

Lets take a look at ancient times. There is a stone on egypt with a picture of "flying vehicle" to help them build the piramid of giza.

1. Nice to see, but mostly we never imagine there is such place at first.
2. It proves that our earth have a very very wide and deep hole which some are unexplore.
3. Ill pick a cave picture just to see how deep and far the caves go, but hey !! we have here in Malaysia.. The Great Sarawak Mulu Caves, still there are unexplore area left.

Picture of inner sun..

Adding..

NASA has discovered strange noctilucent clouds are appearing every summer over the pole down to about latitude 50 degrees.  These clouds consist of tiny ice crystals 40 to 100 nanometers wide that reflect blue wave lengths of sunlight and float at the very edge of space 50 miles up. The hole you are seeing in the imagery is not the polar opening.  It is a hole in the satellite imagery caused because polar orbiting satellites do not pass directly over the pole because the polar opening is located so close to the pole that if they passed over the polar opening, they would lose gravity holding them in orbit.  Most likely the noctilucent clouds originate from the warm moist air coming up out of the polar opening and are pushed to the edge of space where the moisture particles freeze -- by the out flowing of air from Inner Earth.  Every spring the out flow of air from the polar openings pushes the ozone layer apart at the poles also and increases the size of the atmosphere.  The increase in the height of atmosphere above the Antarctic in the Antarctic spring is what Jan Lamprecht theorized in his book, Hollow Planets, caused the Skylab satellite to burn up in the atmosphere.  The outflow of warm air from the earth's interior at the poles are also what causes the mirages of land seen in the arctic.  The warm air rises up above the ice creating a layer of warm air that reflects the land beneath.  Observers around the Arctic have sighted mirages of land all in the same direction indicating that the polar opening is located at 87.7 N 142.2 E.  What they are seeing is a doubly inverted mirage of land at the inner continent located about halfway through the polar opening.

Adding paper notes ..

http://www.facstaff.bucknell.edu/dgriffin/..._in_Science.pdf

This is an oddball back-burner project that I haven't been able to resist. It's been highlighted in David Standish's (2006) book Hollow Earth: The Long and Curious History of Imagining Strange Lands, Fantastical Creatures, Advanced Civilizations, and Marvelous Machines Below the Earth's Surface (Cambridge, MA: Da Capo Press), and "What Curiosity..." has been translated into Portuguese and published online here (among some very good company, I have to say).

The idea that Earth is hollow has a surprising long and not entirely loopy pedigree. Edmund Halley's hollow Earth was the first hypothesis deduced from Newton's Principia, and John Cleves Symmes's theory (far less reasonable than Halley's) was instrumental in the development of 19th century American science and exploration. The web has given it new life and wings. It's a useful teaching case for several reasons. First, it's weird enough to grab students' attention. Second, tracing the history of the idea provides opportunities to trace the history of science more generally, explain inductive and deductive reasoning, talk about critical thinking and the role of skepticism in science, and a host of other "meta-" things. And third, explaining how we know Earth isn't hollow covers a lot of basic geophysics, geology, and geography. There are fascinating parallels in the strategies hollow-Earthers use to bolster their conceptions and those used by creationists and global warming skeptics, but hollow Earth theory avoids the political overtones, undertones, and general messiness involved with those topics and thus provides a neutral venue for students to build an understanding of how science works and doesn't work.

Studying, debunking and finding out require to read tons and tons of material gather from past to present and thinking require. Same as you study about life on earth surface. All i can do is link to the people who made the same question as you.

@fifi85

Same, my I.Q is very very low... let me put it in point form.

- Earth is theorize as hollow with an inner sun.
- Entrance to the hollow earth is from the North and south pole.
- Land in the inner earth is tropical forest type.
- Its Twilight there with 24/7 day time.

@daccorn
If you wonder why oil drill never puncture to the inner earth is that the furthest they ever drill is at 12 miles.. to get to the center of the crust is 400 miles .. as discribe about the crust is 800 miles.

I am doubtful of the admiral story. It does not go in hand with the subterran dwellers being driven there by another race. If they were driven there then this entry/exit should be easily located. It would not be like the admiral described.

In the early 19th century, an eccentric veteran of the war of 1812, John Symmes (d. 1829), promoted the idea of interior concentric spheres so widely that the alleged opening to the inner world was named "Symmes Hole."* In Hamilton, Ohio, his son erected a monument with a stone model of the hollow earth to commemorate his dad's incessant lobbying for an expedition to the North Pole to find the entrance to the world below. Martin Gardner writes that "It took Byrd's flight over the North Pole to deal a death blow to 'Symmes' hole' "(Gardner 1957: 41). However, later advocates hail Admiral Byrd as having actually gone into the hollow earth at both poles! This strange belief seems to be based on nothing more than the fact that Byrd referred to Antarctica as "The Land of Everlasting Mystery" and once wrote: "I'd like to see that land beyond the (North) Pole. That area beyond the Pole is the Center of the Great Unknown." Such evidence apparently suffices for the alternative scientist.

@robertngo
"at 12KM the temperature is already 180C, at the 800 miles down, the "tropical forest" would be several thousand degree.

the picure you show on the first page show several hole that access the inner earth one is from giza, how does the people go through the 800 miles crust without being roasted alive? "

Yes i would agree with you BUT .. refer to the quartz cave ..

"These are images from the Cave of Swords, and the Queen's Eye Cavern, which is alot cooler, thus workers are out of suit in these images." - http://www.abovetopsecret.com/forum/thread592042/pg1

This one shows a man without the cool suit. So if a tunnle going down is not as 2D it should be 3D. Could be turning right and left and up and down. Even lava has its own path to go, just like a river going to the sea. If you see about common cave explorer going in to a deep cave.. it is not that hot as you thought it would be. They say its about 25 Degree, and the depth of it is DEEEeeeeepppp. See the deepest cave. Then why are they not roasted anyway?




The 3,100ft underground shaft near the village of Tian Xing in China where climbers spent two months exploring for four to five days at a time.

This doesn't explain the heat generated from inner sun. There is no heat source in cave. There are also cave water than helps to cool the temperature down there. In mines cave, with only human body heat, the temperature would rise. Miners would use induced ventilation (using fan) to withdraw the hot air and draw cool air into these caves.

Not enough? well if they measure our atmosphere vs the interior atmosphere, it should be the same but interior should have a lot cause no atmosphere limit.

The heat coming out from the inner earth maybe constant, but the surface temperature at North and South pole are not. At some point, ice will melt. How would you explain that?

The bigger the volume, the climate different is even more extreme. Any space that is big enough, would allow pressure and temperature change locally without affecting other region. This effect will propogate, and when the climate build-up become too large, it would start affecting neighbouring climate. The result is massive climate change. Take Jupiter atmosphrere for example.

Cloud formation within inner earth is also impossible, as temperature is higher in upper atmosphere (nearer to inner sun). The water moisture in air will purge through the holes. Inner earth would not be able to sustain water. How long would inner earth survive?

In order to find out about the inner sun or effect by theory. We should look into Olaf Jensen story..  he did make a journal of this. Heres the link..

I would say ..

1.) he didnt even know he would go to the inner earth. ( unplan trips )
2.) He is not a science person, hes a fisherman.. You know our folklore about creatures in the sea. They saw it , they tell it. Expect them to take sample while in their mind is full of fear? i doubt it.
3.) If you crash a ship in the icey cold water. Would you look for your bag of proof? Either your story lives or it dont.
4.) Weird part is, he mention "communicate by air", in those days there is no such thing as radiowave until 1878. His story is at 1829.

Question would be ..

1. How much hydrogen and oxygen to make an explosion?
2. "The resulting fireball will consume all available oxygen molecules". If you look at the Sun, its still burning .. Without Oxygen.
3. What if .. like earth, there is an ozone layer on the inner sun. Earth have magnetic poles and ozone layer. What if.. ozone in the inner world are much higher?

Yes. Using the theory of evolution, the citizens of Atlantis evolved into mermans because their city sunk. Its like one of the hollow earth theory about atlantis.

Maybe bermuda triangle as well. Where people mysteriously disappear. It could be the gateway to the hollow earth

So you're saying the admiral either gone crazy or is an attention whore?

Adding link ..

http://www.hollowearththeory.com/articles/impactCraters.asp

Actually, I thought the admiral was on LSD It was common during their time. If it was today, he will be on ice.

What is the purpose of someone making up the story, Robert? Why must they make it up on the admiral's behalf. They could use anyone else.

Is there ppl actually living 200 yrs old? Not a chance in this world

In Past time era, there is no pollution so the body is much heathy. What-not chemical in the air, water and ground is obselete.
Today however, chemicals are everywhere.. in food, water, air and ground. Turn your water tap you get clorinated water. Go outside you get air pollution. Body is trying to resist to all these unnessasary stuff. So our lifespan fall short.

BUT, to a point where nature can balance it out. Ecological system require to recycle bad content that was very very abudent at that time and pollution of simple basic smoke, feces and pee water.
Today its chemical A to Z type plus less the LARGE amount of forest.