The asteroid belt has been used as proof for this two step process. The idea is that Jupiter, with its gravitational pull, allowed for the formation of asteroids, but disrupted the subsequent formation of a proper planet.
This story conveniently ignores the fact that gravity does not in fact work the way that the model proposes. Gravity associated with an asteroid is much too weak to compact interstellar dust into solid rock. The first step of the process is therefore a complete impossibility.
The older theory regarding the asteroid belt makes much more sense. In this theory, an existing planet called Phaeton was blown to bits in a squabble with Jupiter. The leftover debris of this event gave us Ceres and the Asteroid belt.
Rogue planet blowing up Phaeton
The energy required to blow a planet into tiny fragments is so great that it must have been electrical in nature. A collision between two planets would not have produced the relatively small fragments that makes up the asteroid belt.
However, since conventional science does not allow for electricity to play an important role in astronomy, any alternative to the accepted theory regarding the origin of the asteroid belt has to invoke not only one collision, but a large number of them.
It is therefore no surprise that a newly presented alternative does just that. A recently published paper in the journal Nature Astronomy proposes that no less than five collisions took place.
Astronomers appear to be waking up to the impossibility of their current model. They are opening up to the fact that the asteroid belt is the debris of a violent event. But in their eagerness to hold on to their gravity only view of the universe they move from the sublime to the ridiculous. Why on Earth would five planets suddenly decide to gang up on each other at a random place between Jupiter and Mars?
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