In this he was not disappointed. A few days later his Tutor said， “Tonight I am going to give you a lesson in Astronomy. At dead of night two noble planets， Tarva and Alambil， will pass within one degree of each other. Such a conjunction has not occurred for two hundred years， and your Highness will not live to see it again. It will be best if you go to bed a little earlier than usual. When the time of the conjunction draws near I will come and wake you.”
This didn‘t seem to have anything to do with Old Narnia， which was what Caspian really wanted to hear about， but getting up in the middle of the night is always interesting and he was moderately pleased. When he went to bed that night， he thought at first that he would not be able to sleep； but he soon dropped off and it seemed only a few minutes before he felt someone gently shaking him.