King Daniel Into Darkness wrote:
Sorry, I got a little mixed up. But the point was - how did Reliant ever set course for Ceti Alpha VI when the system now only has five planets?
It's a good question. Think of it the following way: when you drive to your house, do you recognize it as your house or as the fourth house on the left? The explosion that destroyed Ceti Alpha VI laid the fifth planet to waste and changed its orbit, making it look
like the sixth planet in the process.
In other words, just like Khan later in the movie, the Reliant crew only use two-dimensional thinking.