Do most stars from with an accretion disc rotating along the same plane as our own star?
-
I read your question differently... Most stars' accretion disks establish the approximate plane of of their planets, but these accretion disks and planetary orbit planes are not parallel -- they are in different planes.
-
Obviously we can't see most planets but it's to be expected that generally they would all be in a plane, due to forming from the star's accretion disc during the solar system's formation. As with our own system it's likely that in some cases planets won't be exactly in line due to collisions between them in the early days of the system's formation.
-
the odds of then being the exactly like ours is like 1 in in every 1,000,000,000, because the star has to be the same size and made out of the same components as the presun was and a mars sized planet would hit another earth sized one and their would have to be nine planets and that's not even counting moons that play small roles on a solar system