Scientists have been looking for life in other parts of the Universe for decades. The presence of water has been deemed a defining factor.
As with the proverbial no 11 bus, you wait for ages and suddenly three prospects come along at once.
The leading contender is one of Saturn’s moons, Enceladus. It is reported to have an ocean of liquid water 10 kilometres deep under a 30-40 kilometre thick layer of ice.
This echoes The Rime of the Ancient Mariner – Water, Water, everywhere, Nor any drop to drink.