News Space The incredible shrinking proton Subatomic particle may be smaller than theory dictates Share this:FacebookTwitterPocketRedditPrintEmail By Rachel Ehrenberg July 7, 2010 at 3:46 pm This article is only available to Science News subscribers. Subscribers, enter your e-mail address to access our archives. Client key* E-mail* Log in Not a subscriber? Science News is a nonprofit. Support us by subscribing now. Subscribe