Not many people could claim director James Cameron's attention to detail. But with astrophysicist Neil deGrasse Tyson, the man has met his match.The director of "Avatar" apparently made only one change to his re-release of the three-hour-plus drama "Titanic": the sky. And he did this following the incessant lobbying of one very annoying astrophysicist. As recounted by Tyson, he noticed that in a pivotal scene with (SPOILER ALERT) Kate Winslet as Rose clinging to a piece of the boat under the night sky, the left half of the sky was a reflection of the right half. In other words, not the stars she would have seen that night, but a Hollywood fake-out. Tyson mentioned the story at a panel discussion back in 2009, saying, "There she is looking up. There is only one sky she should have been looking at ... and it was the wrong sky! Worse than that, it was not only the wrong sky; the left half of the sky was a mirror reflection of the right half of the...