Not only would it have problems for the planets themselves, but the Solar System in general would be in trouble

Not only would it have problems for the planets themselves, but the Solar System in general would be in trouble
It would take something special, but the consequences would change the Solar System as we know it
Astronomers believe they have discovered a Neptune-sized satellite orbiting a giant Jupiter around a Sun-like star
Studies of a binary pair of asteroids provide an insight into the past of the Solar System
Gas giant beta Pictoris b has been heavily studied since 2009, but now its identical twin has been spotted orbiting two brown dwarf stars
Josh Barker from the National Space Centre answers this question for us
Dr. René Heller chats to us about exomoons and the probability of them supporting life