The Space is enormous.
The Space is full with physical bodies – stars, planets, asteroids, comets, dust, gases and still ions.
The bodies form Galaxies, Star clusters, Systems like our Sun System, nebulae, comets, and many others less or more complicated space objects.
I wish to focus over bodies.
The space bodies are presented in big variety.
They differ by dimension, mass, form, color, chemical composition, and so on …
For me, the biggest difference between space bodies is their shape!
There are presented two main groups:
- bodies with shape of the crystals and chemical compounds they are built. In this group are presented asteroids, small
satellites, comets, meteors, dust, gas molecules, ions, …
- bodies with spherical shape – stars, planets, big satellites.
The second group is very interesting because the spherical form is not occasional.
This is exactly the form of pure Gravitational force!
That means, the gravitational force overcomes all other forces and emphases its natural shape.
Next, those bodies seems to possess laminated structure.
For the Earth, Moon and Mars this structure is proven by seismic.
For stars, big planets, small and middle planets and big and middle satellites the laminated structure is essential in models.
Another interesting feature of those bodies is presence of inner source of energy.
Many times, we are not possible to understand and determine the nature of this source of energy. However, it is available.
Also, seems to be growing of this source of energy with growing mass of the body.
In addition, the inner spring of energy is supposed to be placed into cores of bodies.
In the case when it is possible to presume more than one source of inner energy as bigger is source as deeper is it.
There has not strong limit between first and second group. The dust requires less mass to form spherical object than crystals.
The crystal of Sulfur requires less mass to form spherical object than Iron. Due to, the limit between two types of space bodies represents lane, but not line.
There has not strong limit between planets and stars. The Mercury and Pluto are more like to asteroids, while Jupiter and Saturn are in many ways similar to stars.
Exactly this group of bodies I accept as Massive Gravitational Bodies – MGB.
In other words, bodies in which the gravitational force is sufficient to enforce natural shape for the gravity.