Vincent Risi & Jane Maddin asked:
Given a start point of the gas and bits of dust left over from a supernova, or from a primoridal source - how does a solar system form?
Once planets are formed, how do they get into stable orbits?
Isn't the idea that we get 'new' material from supernovas etc, that is 'exploding stars?'? yor_on, Thu, 29th Sep 2011