According to current understanding, the Sun, Earth and Moon are all formed through gravitational accretion. However, since the Earth is circling the Sun and the Moon is circling the Earth, based on gravity, the earth should move closer to the Sun and the Moon should move closer to the Earth. In other words, the Sun should not let the Earth exist and the Earth should not let the Moon exist. Known fact opposes the theory therefore, it can be argued that current understanding is incorrect.
To correctly understand the formation of the solar system, it is key to distinguish the formation of a star from the formation of a planet.
The formation of the Sun
When the size of an object is greater than 5 to 10 times the size of the Earth (threshold), significant accretion / condensation is initiated due to gravity and the first disk is formed to feed the central object.
As mass increases, the centre gravitational force increases, resulting in more objects being captured by the first disk just like making a snowball. This further increases the pressure in the central core of the object, changing it from high mass to low mass, and eventually to H2. This process drives the core temperature higher and higher, finally initiating thermonuclear fusion.
Due to the fact that the increase in the inward force of gravity is much faster than the outward force generated by thermonuclear fusion, the central object continues to grow, until everything is captured within the first disk. Then, since there is nothing to feed the central object, the first disk disappears and the central object stop growing.
However, the central object will continue the process of Condensation, and its core will continue to grow until the outward force generated by thermonuclear fusion becomes greater than the inward gravitational force, in which case all substances melt to give rise to the birth of a new star- the sun.
The formation of the Solar System
Shortly after, because of differing temperatures and pressures at different points / layers of the Sun, explosions occur, just like launching artificial satellites. These huge burning fragments all circle the sun due to gravity and thus form the second disk.
These broken burning pieces continue their inherited thermal-nuclear fusion and even create their own satellites-moons and form their own disks until they cool down. In this way, planets were born and the Solar System was formed.
Evidences that the Sun created the Earth and the Earth created the Moon
Sun was formed 4.567 billion years ago, Earth was formed 4.54 billion years ago and the Moon is thought to have formed not long after the Earth. This time sequence is consistent with the idea that in the second disk, the Sun was formed first and shortly afterwards created all the planets, including their satellites in the solar system.
Both the Earth and the Moon have a burning core. Earth’s surface was considered to be a liquid, having a very high temperature 4.5 billion years ago. Some other planets and their satellites also have a burning core. This is consistent with the idea that they inherited thermal-nuclear fusion from the sun.
Furthermore, in our solar system, there is no planet or object moving inward to the Sun, and both the distance between the Sun and the Earth and between the Earth and the Moon is growing (15cm per /year and 4cm per /year respectively) too . It is likely that the Sun will be left with none of the original bodies in orbit around it . This is consistent with the idea that thermal-nuclear fusion happened to the Sun, the Planets and their satellites and resulted in the initial maximum mass values and the initial minimum distances.
There are basically two kinds of processes that occur in the universe: Accretion / Condensation produced by gravity in the formation of a star, and Disintegration produced by thermal-nuclear fusion in the formation of planets. Two disks of different functions, the first disk and the second disk, are created accordingly.
The first disk disappeared and the second disk is created when a star is born. The size of a star is determined by the size ( total mass ) of the first disk.
In the first disk, objects move inward to the centre, the mass of the central object, the youngest, increases from its initial value.
In the second disk, planets and satellites inherit thermal-nuclear fusion from the star, move outward, away from the star or a planet, while the mass of the star or a planet decreases from its initial value. Planets are older than their satellites. The star is the oldest.
Taking into account the fact that in the solar system, Sun, planets and their satellites meet the second disk standard, my conclusions are proved to be correct.
1. Why is the Earth moving away from the sun? http://www.newscientist.com/article/dn17228-why-is-the-earth-moving-away-from-the-sun.html#.VP_eGckg6t9
2. Formation and evolution of the Solar System