Saw this at lunchtime while reading the BBC News:
http://www.bbc.co.uk/news/science-environment-19401891 A team of scientists using a NASA telescope have found a solar system with two planets orbiting a pair of stars.
The outer planet is probably a gas giant, like Jupiter or Saturn, but its orbit places it in the habitable zone. The scientists have suggested that we may discover a similar planet with large moons, in which case one of them might support life.
Which makes me wonder if John, Rodney and the guys ever came across a similar system on one of their travels. I'm sure Rodney would have been eager to study it?