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Science 12 January 1996:
Vol. 271. no. 5246, p. 147
DOI: 10.1126/science.271.5246.147
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Research News

Andrew Watson

Researchers at CERN, the European center for particle physics in Geneva, have unveiled a piece of a looking-glass world by creating the first atoms of antimatter. Last fall they painstakingly combined positrons--antimatter counterparts of electrons--with antiprotons to make 11 short-lived atoms of antihydrogen. Antihydrogen should have exactly the same mass and optical properties as ordinary hydrogen, but researchers will be studying it to make sure; any deviations from this symmetry would shake the foundations of physics.




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Science. ISSN 0036-8075 (print), 1095-9203 (online)