I completed it June of last year and it seemed to involve both logic and a measure of luck. It took me all of ten minutes to get through, but a friend of mine was stuck on it for over a day! And if I remember correctly, guides to this step weren't very helpful because this part of the plot was different for everyone just like the constellation locations. All I can say is don't get too discouraged --maybe leave it sit a day or two and then try again when you're fresh. But if you're still stuck, you can try this link: Click me. It gives a method that worked a good portion of the time. Although it wasn't much help to me, it got my friend unstuck!