The folks at Thunderbolts suspect that the gas giants, Saturn, Jupiter, Neptune and Uranus, did not originate in this solar system, whereas their rocky moons, along with the other planets, were formed from our Sun, which agrees with the propositions of Solar Ancestors.
It is the smaller rocky planets that are most interesting. We believe that Mercury and our moon are ‘related’ and have been put in their positions purposefully. There is much more to be learned about Pluto, Charon and Ceres too. For more on the latest discoveries about Pluto, see:
· Pluto Is Larger Than Thought, Has Ice Cap, NASA Probe Reveals: www.space.com/29924-pluto-larger-than-thought-nasa-flyby.html