Class had begun! After a quick peek at what others were doing, Carl took out his parchment and quill so that he could take notes ... or doodle, but mostly to take notes. He listened to the question and thought about it for a moment.

He raised his hand and said, "I think we are interested to know more about the universe, so that we understand more about what we are." As for why it was a subject at Hogwarts, same reason right?

Listening to his classmates' answers, he began taking down notes.