In a few days, a £1.4bn probe will be blasted into space on an eight-year mission to find signs of life on other worlds in our solar system. The spacecraft will not head to local destinations such as the planet Mars, however. Instead, it will fly into deep space and survey the icy moons of distant Jupiter. In doing so, it will open up a new chapter in the hunt for extraterrestrial life.
The Jupiter Icy Moons Explorer - or Juice - will exploit an unexpected feature of our solar system. The greatest reserves of water turn out to exist on worlds very far from Earth, in deep space, and in orbit around the giant planets Jupiter and Saturn. Juice is the first mission to be launched specifically to explore these remote worlds.
