How long does it take a planet to form?

It took the Earth 4.5 billion years to form. 

https://vixra.org/abs/1711.0206

Stars evolving into planets, stellar metamorphosis

 

Evolution of the Earth and Solar System Bodies in One Video

 

Brown Dwarfs Evolve into Earths, Stellar Metamorphosis

 Book here: https://vixra.org/abs/1711.0206

Stars are evolving planets

 Stars are evolving planets. Book here: https://vixra.org/pdf/1711.0206v5.pdf

Planets are evolving stars

 Planets are evolving stars. Book here: https://vixra.org/pdf/1711.0206v5.pdf

James Tour, Life is a Direct Result of Planetary Evolution