What is the Accretion theory?

Answer:
This belongs in astronomy.
It's a theory of how solar systems have come to be.
Basically, clouds of gas draw together and form an accretion disc (which lies in a plane equal to the planets' axes).
In the center a sun is created from the large amount of particles gathering there.
Elsewhere particles gather and form larger particles, which collide and gain size over time.
After a long, long time a solar system has been created.
All the details are not known, and this was probably the most simplistic explanation of the theory possible, try searching for accretion disc.
First answer by ID1536493102. Last edit by ID1559197474. Question popularity: 6 [recommend question].