Title: Formation and evolution of our solar system: some hints for understanding the great diversity of
extra-solar systems.

Abstract: In the last 10 years we have focused our work to reconstruct the evolution of our solar system,
from the phase dominated by the interactions of the planets with the proto-planetary nebula up to the
current time. We have now built a quite coherent scenario of the solar system evolution that allows us
to explain most of its current properties. This scenario will be detailed in this talk. It shows that the
current structure of the solar system is due to a sequence of specific "accidents". Thus, we can ask
ourselves the question of what would our system look like if some of these "accidents" had not occurred
or had they occurred differently. This exercise suggests some venues to explain the great diversity in
the structures of the extra-solar planetary systems observed to date.