“So you need this?” “Yes. That bond. That hope.” “Now? – For life?” “Now and for life.” Life, said the rushing water below between the rocks in the cold darkness. Ursula K. Le Guin, The Unchained (translated by Jakub Němeček) When astrobiologists search the universe for potential worlds where life could coexist, they are guided by the phrase follow the water – because other life than…