Science: Anti-Proton?

Normal matter is organized into tight little worlds—atoms—with positive protons in their nuclei and negative electrons revolving around them. There is also a homeless waif, the positron (positive electron), that seems to have no place in this orderly scheme. Born in atomic catastrophes, it lives only until it hits a normal electron. Then the two "annihilate" one another, turning into gamma rays.

Some physicists have reasoned that since positrons exist, there should be negative protons (anti-protons), around which positrons could revolve to form atoms of "reversed matter." Last week a group at Massachusetts...

Want the full story?

Subscribe Now


Get TIME the way you want it

  • One Week Digital Pass — $4.99
  • Monthly Pay-As-You-Go DIGITAL ACCESS$2.99
  • One Year ALL ACCESSJust $30!   Best Deal!
    Print Magazine + Digital Edition + Subscriber-only Content on

Learn more about the benefits of being a TIME subscriber

If you are already a subscriber sign up — registration is free!