Science: Electron Is Surprisingly Spherical, Say Scientists Following 10-Year Study

... the electron differs from being perfectly round by less than 0.000000000000000000000000001 cm. This means that if the electron were magnified to the size of the solar system, it would still appear spherical to within the width of a human hair.

For much more, see Electron Is Surprisingly Spherical, Say Scientists Following 10-Year Study, May 25, 2011 at ScienceDaily.