Why you really don't want to live in a wide binary solar system

There's an old fringe theory that the Sun isn't our system's only star, that a red dwarf star named Nemesis is hiding out in the Oort Cloud. We've never found any evidence for it or any other secret companion star, and if this simulation is any indication, that's very good news for the gas giants. » 1/06/13 4:00pm 1/06/13 4:00pm