Emperor Augustus Caesar looked to the dark southern sky on the balcony of his palace in Rome one early evening, as he had done in two nights before. He wasspending the past two nights simply gazing at the dark southern sky.His wife, who had accompanied him at their palace balcony for the past five nights, wondered why the emperor had been constantly gazing at the southern sky. The palace balcony faced the southern section of the imperial city of Rome."What's on your mind?" his wife Drusilla asked.The emperor looked at his wife."What do you mean?" he asked her."You have been gazing at the sky during the past nights. And now, you are doing the same thing. What's on your mind?" the emperor's wife asked him again.