Clark~Kent
Spider_Jerusalem
From what I remember of Return of the Jedi I'm going to say that Amidala flees to Aalerdan with Leia and sends Luke to Tatooine.
but why....... i feel sorry for luke......
Obi-Wan and Yoda had to hide Luke, because he is the son of Anakin. If he was found and raised to learn the ways of the Dark Side, the Emperor and Darth Vader would have been able to terrorize the galaxy without end.
Luke was the last hope. And if he messed up and got himself killed, or fall to the Dark Side (which Obi-Wan and Yoda feared when he went to Bespin), they had a back up in Leia, but that was, like, their last resort plan if they had to fall back on it.