Military: Particle-beam weapons: A controversy: `Highly questionable¿ is the label applied by four M.I.T. scientists, but the U.S. Department of Defense is betting on the new scheme

With just two particle-beam weapon systems installed on satellites in geosynchronous earth orbit at 40000 km, a country could, theoretically, neutralize ICBMs or submarine-launched ballistic missiles fired from any site in the world. Such ¿death ray¿ weapons, it is reported in a study by four physicists at the Massachusetts Institute of Technology, could ¿ again theoretically ¿ destroy enemy missiles the moment they climbed out of the earth's atmosphere and entered space.