Physicists may be a step closer to solving the mystery of proton size

For nearly a decade, the width of the puny subatomic particles has been disputed

Atom illustration

Scientists disagree over the size of protons (illustrated within the nucleus of an atom). A new measurement lends additional support to claims that protons are smaller than previously thought.

Altayb/iStock/Getty Images Plus

This article is only available to Science News subscribers.

Subscribers, enter your e-mail address to access our archives.

Not a subscriber?

Science News is a nonprofit.

Support us by subscribing now.

More Stories from Science News on Physics

From the Nature Index

Paid Content