Smaller proton a big surprise
ScienceNews.org
New, very precise measurements suggest that subatomic particles called protons may be four percent smaller than previously thought. If so, the results could indicate a problem with quantum electrodynamics, a major unifying theory that's been called the jewel of physics. It describes how light and matter interact by incorporating Einstein's special relativity into quantum mechanics.
So what?If confirmed, the new measurements may open the door for a major advancement of QED theory. Or, someone could just have made a mistake in their calculations. Nobody's perfect, not even scientists.