Superman Returns

As an astrophysicist, there are a few things I feel are necesarry to say about this movie, granted you simply accept the premise of Superman and all of his powers.

1. As nifty as it looks during the opening credits, planets with rings would not have two sets of rings perpendicular to each other, and especially not at the same range of radii. It looks exotic and nifty, but it just wouldn't happen (or if it did, they would quickly collide/scatter/turn in to some other configuration).

2. Sound require a medium to propagate. If one were to travel up through the Earth's atmosphere until you have actually reached the vacuum of space, and THEN decided to sit and listen of the sound of Bad Things Happening, you simply wouldn't hear anything. It doesn't matter how good your hearing if you are listening through a vacuum. Even if you have Superman's hearing.

3. The shock wave from Krypton's red giant sun would take FAR longer than a few seconds to reach Krypton. (the red giant part, I might add, IS correct--if we assume that Krypton's sun went supernova, and that is the cause of the planet's destruction, it would, in fact, be a red giant up until moments before it exploded). Even observing the collapse from Krypton, such that we have already waited for the light from the star to reach us, matter expelled from supernova do not travel at a significant fraction of the speed of light. Especially if Krypton was far enough away from the star to not be a molten ball of burning fire, itself (red giant = very big and very hot), it may take days, weeks for the shock wave to reach the planet.

Other than that, everything depicted in the movie is completely believable. =Þ