Do Hydrogen and Antihydrogen Weigh the Same (image) University of California - Berkeley Share Print E-Mail Caption UC Berkeley/LBNL physicists asked the question, does normal hydrogen (left, with a negatively charged electron orbiting a positively charged proton) weigh the same as antihydrogen (a positively charged positron orbiting a negatively charged antiproton)? Credit Image by Chukman So, UC Berkeley. Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.