"More or less accurate science", with rather significant error towards "less" in many cases.
Now, don't get me wrong; I love SF, and will happily suspend disbelief for wildly implausible fictional technologies (as long as an author doesn't then go on to flagrantly violate the physics of their own universe out of sloppiness or as a plot device).
That said, for example, I'm not entirely sure what part of current science suggests that flinging a spaceship at a black hole ("collapsar") at relativistic velocities will cause said vessel to pop out of another black hole, near-instantaneously, elsewhere in the galaxy. ("The Forever War", as much as I love you, I'm looking squarely at you.)
Now, don't get me wrong; I love SF, and will happily suspend disbelief for wildly implausible fictional technologies (as long as an author doesn't then go on to flagrantly violate the physics of their own universe out of sloppiness or as a plot device).
That said, for example, I'm not entirely sure what part of current science suggests that flinging a spaceship at a black hole ("collapsar") at relativistic velocities will cause said vessel to pop out of another black hole, near-instantaneously, elsewhere in the galaxy. ("The Forever War", as much as I love you, I'm looking squarely at you.)