Why do inner planets of sun has solid surface and outer planets are largely made of gas?

Answer 1

A very good question indeed... the answer depends on two forces: Gravitational pull of the Sun and centrapetal force of the planets.
If the planet is more closer to the sun then gravitational pull holds it in an orbit that is very much closer and also the centrapetal force that is present in the core of this mass(planet) tends to draw the molecules closer to the core and hereby compressing/condensing the entire mass.As both these forces are proportional to each other it can be observed that planets that are closer to the sun are solid while those further away tend to be made of gases.

Answer 2

Planets are spherical structure which have a defined closed surface which are basically solid. The Earth is the only Planet which has a considerable non solid mass sitting on its surface which is the atmosphere and the liquids which are the seas.
The largest planet in the solar system which is Jupiter is a solid sphere made up of basically frozen hydrogen gas.
Gravity pressures hold all planets inclucing the Sun which is basically a Star which release micromasses in space of which we receive their energies on Earth.
So the outer planets in our solar system are really made up mostly of frozen hydrogen gas.You are correct.
Now why this is so? there has to be a reason. Since the Big Bang theory did not explain this; we need to Go to the Biblical account of Creation to Understand why.
Einstein was the only one to explain that the gravity energy permeating the mass structure of Planets, was the result of the deformation of space.

Answer 3

The intuitive answer that the gravity of the sun sucks up most of the gases from the inner planets is misleading. Gravity affects all matter equally regardless of density. The planets closer to the sun are constantly bombard by the solar wind. This tens to actually blow away the gasses of the inner planets leaving the denser material exposed. The farther planets receive a dissipated, less intense solar wind so are able to retain a larger atmosphere. The Earth happens to be partially protected from the solar wind by it's magnetic Field. The magnetic Field is generated by the motion of our fluid core. This is why earth though closer to the sun is able to retain a fairly dense atmosphere compared to Mars. Of course Mars also has only 1/3 the gravity of Earth to hold on to what it does have.Even so you would expect it to have more "air" than it does but it has no magnetic Field to deflect the solar wind. The large gas plants do have magnetic Fields due to fluid ( gas " in motion.

Answer 4

The inner planets are smaller and the outer planets are also smaller,the gas giants in between.
The distribution is likely due to the angular momentum injected into the system when the first rocky material initiated that solar system.
The sun predominated the accumulation of hydrogen,the inner planets stayed rocky.
The gas giants scooped up most of the remaining hydrogen and the distribution of the rest of the components was orchestrated by gravity.

Answer 5

Gravity will affect denser materials more than less dense materials. Solids, such as the metals which make up the inner planets are far denser than the gasses of which the outer planets are comprised. So, since the sun is the densest heavenly body in our solar system, and therefore has the greatest gravataional pull, it attracted the densest matter closest.

Answer 6

The denser the mass the more it is attracted a the central of gravity. The central of gravity in our SolSys is the Sun, that is why heavier bodies are nearer to Sun.

Answer 7

Also it is too hot this close to the sun- more of the gases are boiled off here. In some solar systems, this does not occur, for currently unkonw reaons.

Answer 8

It is because of gravitational pull. Inner have higher pull so dense and outer have lesser gravity and less dense.

Answer 9

what jason c said