Shaun comes to an interesting conclusion that I feel is worthy of some discussion. "I'd put my money on a brown-dwarf companion to our sun, orbiting far out, which may have its own planets."
I have often thought that there was indications that Sol had a companion. I have often read that the Solar System as a whole behaves, as a whole, as if Sol was part of a binary pair. These recent research results seem to prove it out to some degree. Comments?