Friday 29 June 2018

EARTH HISTORY RE-CONSIDERATION


(Geologist Edward Young, Theia, Moon, collision, impact)

The Earth core is assumed to be a ‘’globe’’ with another smaller ‘’globe’’ in it; so far they are named as ‘’outer core’’ and ‘’inner core’’. This essay is to discuss about re-consideration to the core(s) on basis of updated information about gravity from NASA and some other space researching bodies.

I-NASA GRAVITY MAP:
How was the Earth established?



Figure 1-Gravity map with data observed by GRACE (Credited to NASA, updated on May 14th 2017)


The above Figure ‘’1’’ is re-built by the real NASA data, which are harvested by some satellites in observing the Earth gravity. The following is a quote from a title of NASA news:


‘’The joint –NASA-German Aerospace Centre Gravity Recovery and Climate Experiment (GRACE) mission has released its first science product, the most accurate map yet of Earth’s gravity field. GRACE is the newest tool for scientists working to unlock secrets of ocean circulation and its effect on climate.
Created from 111 days of selected GRACE data to help calibrate and validate the mission’s instruments, this preliminary model improves knowledge of the gravity field so much it is being released to oceanographers now, months in advance of the scheduled start of routine GRACE science operations. The data are expected to significantly improve our ability to understand ocean circulation, which strongly influences weather and climate.’’

Although the Earth has been established in almost 4.5 billion years ago, since then there are lot of changes on the Earth; nowadays it looks as a perfect sphere. But actually (by NASA gravity map in figure 1) the evidence is still like alive despite the change in billions of years. The present Earth is made out of 2 major parts: 




Figure 2-Junction of 2 parts.

Junction is un-covered.

Despite there are bundles of hypothesis about the Earth and Moon establishment, every of them claims recognition; this evidence is to confirm the giant impact  hypothesis of Geologist Edward Young. The collision between another planet and our primitive Earth left evidence behind, that is junction, let’s go further with it.  
In order to understand the ‘’why’’, the following net force or vector addition rule is employed:




Figure 3 - On-junction gravity is less than on-main-body one.

+Junction: The dark blue trace is nearly about Earth’s longitude and getting through India, China and Russia over Artic…and Atlantic is assumed to be the junction between the two mentioned parts. The Gravity at Arctic and the channel between Argentine and Antarctic continent are normal, this is another issue in the subject that requires more research.
+ On-junction gravity is less than on-main-body: The gravity observed at junction or border between the two parts (each gravity centre is belonging to a different part) is less than normal because:
Two vectors make the largest total when the angle between them is 00, this is known to the world.

II-EARTH IS A PLANET OF TWEEN GRAVITY CENTRES:

What we should debate is the tween gravity-centre structure of our present Earth.
The tween gravity centre planet is made out of a combination of one and the other, the annexation is assumed to be made by collision; if it was not known to us before, it is debated today. The following is a quote from Wikipedia dictionary:

By the Moon's origin  ‘’The Moon is an astronomical body that orbits planet Earth and is Earth's only permanent natural satellite. It is the fifth-largest natural satellite in the Solar System, and the largest among planetary satellites relative to the size of the planet that it orbits (its primary). The Moon is after Jupiter's satellite LO, the second-densest satellite in the Solar System among those whose densities are known.
The Moon is thought to have formed about 4.51 billion years ago, not long after Earth. The most widely accepted explanation is that the Moon is formed from the debris left over after a giant impact between Earth and a Mars-sized body called Theia.’’

The above explanation is accepted and certainly my argument is about it.

a)-More demonstration needed:

In addition to the assumed demonstration on Wikipedia for Theia the following ‘’equation’’ can explain a bit more on term of structure and power in the process:




Figure 4-My Earth Collision Equation

‘’a’’ is a planet (Theia) or a huge comet in solar system.
‘’b’’ is our primitive Earth (in the shape of recent found comet Rosetta, (ESA Image)).
‘’E’’ is denoted for the Earth with the latest gravity data (NASA Image), mind that the Earth does not look like that without water in the oceans.
‘’M’’ is the Moon, debris after collision.

b-Non-aligned or head-on collision:

Almost collision that happened when one collider’s gravity centre locating on the same moving line with the other is assumed as head-on collision; the followings are examples:
+Two bricks on rail.
+Two wagons on a rail.
+Two globes of pure material (un-pure material globe may have gravity centre off from its geometric centre).
+Two pure cylinders standing straight upward, one moves toward the other than hit.
Otherwise, the collisions that gravity centre of one collider is not on the same moving line with the other, are assumed as non-aligned. Consequence of non-aligned collision always includes a moment or a change in spinning wise and speed.


Figure 5-Non-aligned collision
-The ‘’equation’’ in (Figure 4) is to depict a process when a planet ‘’a’’ merges with planet ‘’b’’, the products are present Earth and the Moon. The Earth after collision is not just in a new shape, but also with new structure as following illustration:


Figure 6-New structure of our Earth

The individual gravity centre of each part might be proposed as following:


Figure 7-New structure with new gravity centres
As assumption repeated more than twice, the collision between Earth and Theia is head-on type, but actually there is rare head-on collision but non-aligned one in natural reality. The reason is quite simple that there is no perfect pure globe or cylinder found in nature, or the way one moves along is always out of the way where the other moves along. On the other hand, the shape of each is never a perfect square or perfect global in nature…therefore, the head-on collision is hardly found, so every collision leads to both deformation and spinning change, which is not debated in this title.
Although we have neither image of primitive Earth nor the Theia, but have title to suppose that each of them is a certain globe, so those two globes after collision might become a combination as above illustration, where the part left by Theia on our Earth is yellow or yellow half. The original core of Theia and its gravity centre are eliminated after collision then a new gravity centre of yellow half is established.

-Evidence:
+Diamond is never produced in normal condition but very high pressure and temperature. Notwithstanding, the diamonds are found near Earth surface or even in open mines of Africa, those evidences are indicating that Africa rock and soil used to be at very deep layer and belonging to Theia planet. This argument may lead to an assumption that there is still some diamond on Moon surface, this is quite in a normal logic, but nobody can suggest where on the Moon is rich of diamonds.
At present there are several hypothesises explaining that the diamond of Africa is floated up from deep layer by impact of collision or what so ever since billions years ago, while metal is always on one way to Earth’s core without return, the diamond should be assumed to be on the move of the same wise as metal.
+The lunar rocks  and soil from Moon are stored at NASA; although experiment in lab with them is facing some difficult, I believe that they will be successful in proving that the relation between Moon and Earth is substantial in the wise that rock and soil are common somewhere. The sample rock, anyhow need to be collected from larger area on the Moon as well as Earth surface.

Conclusion

-The gravity map issued by NASA reveals a‘’junction’’ which can be like a disk that created by the collision between our Earth and another planet, that used to be named as Theia (Wikipedia for Moon).
-The gravity centre of each is still viewed as independent to the other; the junction disk is assumed as very hard to be beaten through; at least there is no evidence of breaking through.
-The Earth’s core is in the junction of the historic collision and approximately in the middle of Earth’s rotation axis. The junction is a product of ‘’metallurgy’’ during colliding, it must be at good heat conduction or heat transferring. For heat conduction, the evidence is that the temperature at either the Northern or Southern Pole never been chilled to -900C while it might be -1500 C in space near the Earth; this fact is realized as the Poles are warmed up by the heat from Earth core.
Therefore, the Earth core is assumed as cooler than all sides around.
Hanoi 29th June 2018

Nguyen Van Cuong