A forgiving aspect of the sci-fi genre is, if your story paints you into a corner all you have to do is paint a door and walk out. In Sci-fi, anything is possible. To the probable dismay of the realists in the audience, "Supernova" takes advantage of this fix as it's weak plot unfolds. The movie has the obligatory sex, action, adventure, suspense, special effects, etc. However, it doesn't equal the sum of its parts and the earnest acting it offers isn't sufficient to get this very forgettable drama over the bar.