The italicized information is A. an article title. It is a title of the article that these two people, Karen and Michel wrote, and which can be found in the magazine called Astronomy Journal. It's not a quote or the name of a chapter in a book, because this is a journal, not a book. It is just the name of something these two people wrote for a magazine.
Your most common strategy for handling major disagreements with other people has been to f<span>ind compromise options that both you and the other person will accept :)
