The big news is not that they've been able to create it, but that they've been able to contain and preserve antihydrogen for something approaching the length of time required to begin a serious investigation of its physical properties.
(It should have properties similar to regular hydrogen, but any discovered differences should be extremely informative.)
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Date: 2010-11-19 04:15 am (UTC)(It should have properties similar to regular hydrogen, but any discovered differences should be extremely informative.)