The Goldilocks Zone

There could be fish people swimming around on Europa. We don't know for sure, do we? You think about what we mean by... What about sea monkeys? No, there might well be. There's a Europa clipper which has been launched next year. And there's a series of missions which are going to see if that may be a habitat for life. If we've had liquid water there for the last four billion years, that's a long time for evolution to happen. Who knows how far evolution has gone? I agree. Fish people with fish radios and Wi-Fi's, that's probably unlikely. Brian Cox reveals, because they'll say it was Brian, they won