Distance to Mustafar?

It does seem odd that Anakin would have had to have been lying burnt to a crisp for so long while Palpatine travelled to fetch him... I mean from when Palpatine exclaimed that he could sense that Anakin (or Vader...) was in trouble.

Even if he sensed this at the beginning of the duel, that would only have lessened the time by a few minutes or so.

Heh!

Yep, and it also makes me wonder that if Anakin could survive so long without an iron lung type device, why he needed it later ? Malpractice by Sids medical droids ??

And also makes me wonder that if everyone could get from Mustafar on the outer rim to Coruscant so quickly, why didnt Anakin visit Padme on nights and weekends while he was fighting there ??