If you were wondering about the believability of Super Mario Galaxy, but didn't feel like doing the calculations yourself, you're in luck.

Polygon reports that the students in the Department of Physics and Astronomy at the University of Leicester in England ran all the calculations on Super Mario Galaxy and they're not impressed, to say the least. "Clearly, the degeneracy pressure far outstrips the gravitational pressure by eleven orders of magnitude," the paper states. "The outcome of this discrepancy is that if constructed, the planet would survive for only a very brief moment before violently destroying itself and any short plumbers who happen to be running about on its surface."  Obviously, the students have a sense of humor, when they later state, "The slight lack of resistance of upwards blood flow would inflate and redden the subject's face," and added, "It is possible that this is the source of Mario's baby-like complexion."

Personally, I think a game where Mario tries to escape planets that are violently destroying themselves sounds like a great sequel. However, for now, you can play Super Mario Galaxy on Wii and check out the rest of the student's paper on their website.

Exploding planets, exploding schmlanets. It'd be worth it to hear this classic tune.