Word: proton
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...immediate consequence of this theory, as Georgi points out, is that the decay of protons is inevitable. Physicists have spent many years hoping to observe such an event, he says, but to date, they have not been able to detect any evidence of proton decay...
Despite the excitement generated at first by his theory, Georgi says that within ten years, it became clear that protons do not decay as fast as SU(5) theory predicts. By then, scientists had reached a consensus that the phenomenon of proton decay was a credible hypothesis, though difficult to confirm...
...Georgi says he remains hopeful that proton decay will be detected...
...proton decay is not much slower than the current bounds, it may still be seen, but it could be that we will never see it," he says. "That would close the one tiny experimental window on the world at these distances...
...behind in the development of expendable rocket launchers. More and more U.S. companies are looking to the European Space Agency's Ariane rocket, which last week carried two television satellites aloft, for placing commercial satellites in orbit, and also -- now that Washington has given its approval -- to the Soviet Proton...