What Cassini taught us about Saturn's moons is a start. We look back at its amazing journey, and Monica Grady argues we should now be thinking about sending the next probe.
For good reasons, there are rules about how we run the risk of introducing Earth microbes onto other planets. Dave Rothery suggests we might need to relax those standards as we explore further.
Join us on a virtual journey to explore the science behind the Huygens probe sent to explore Titan, one of Saturn's mysterious moons. To help you get to grips with the way the technology works, we're going to send our probe to somewhere a little more familiar than Titan - and much closer to home...