It's pretty common for science fiction TV shows to be "rebooted" (I would guess more common than other genre because of the way that the science elements date). For example, Battlestar Galactica, Knight Rider, and the Bionic Woman.
(Note that I'm distinguishing between resuming an old story, like Star Trek 2009 or the 'new' Doctor Who, from going back and re-creating the original story with differences).
I don't know of any examples of this in print fiction. Why is this?
If I'm wrong and there are examples, that's a valid answer, but one or two examples will suffice - I'm not asking for a list.
Please exclude TV-tie-ins (i.e. obviously there could be original-BSG books and new-BSG books) and comics (which are rebooted all the time).