Astrophysicists take on Superman

Well, you'd think they would have better things to do, but apparently a few of the astrophysicists of Stanford and the University of California have been considering recently whether or not Superman would really have the powers he has in movies/comics/TV in the 'real' world. For example, x-ray vision and flight. It's an interesting discussion, and you can read the article for yourself here. Personally, I don't think we should examine super heroes too closely. Takes away a little bit of the magic and mystery, in my opinion.