A cloud of gas and dust.
When the Moon was formed, the Solar System WAS already a solar system.
Nobody let them in. They formed with the solar system.
when told that let a solar system be formed it was formed
The Solar System formed from a cloud of gas, that collapsed.
Big Bang is the term that describes how the solar system was formed.
it was all formed by me
Here is a very basic answer... Our solar system was what happened when remnants of a star (that exploded) were pulled together by gravity. First formed planets, then formed the Sun. This is how almost every other solar system is formed...
The solar system formed from the gravitational collapse of a cloud of interstellar gas.
It is postulated that a supernova explosion was the catalyst which formed our Solar System.
Solar nebula.
The hypothesis on how the solar system was formed is known as the solar nebula theory. This theory posits that the solar system formed from a massive, rotating cloud of gas and dust called the solar nebula. Over time, gravity caused the material in the nebula to clump together, eventually forming the sun and the planets.
The solar system is believed to have formed about 5 billion years ago, and by the way, why do you call it YOUR solar system? Do you come from a different solar system? Because if not, then it's OUR solar system.