Word: tritium
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Dates: during 1980-1989
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Unlike rockets, missiles launched by railguns would not leave fiery, polluting exhausts detectable by satellite. In a forthcoming issue, Physics Today reports that some scientists think that railguns, firing a stream of high-velocity particles at a target of deuterium and tritium, may offer the best way yet of achieving controlled fusion, a key energy hope for the future. Perhaps the most far-reaching application involves the space colonization ideas of Princeton Physicist Gerard O'Neill. He and some colleagues at M.I.T. are already building models of kindred electromagnetic launchers that they believe could be assembled on the moon...