When Soviet Cosmos 954 naval reconnaissance satellite plummeted from its orbit and disintegrated over northwestern Canada last week, it underscored an inescapable fact of the space age: we are never alone. Nor, for that matter, is the other side. Day and night, little is hidden from the intelligence-gathering techniques of the U.S. and the Soviet Union. Information is plucked from space, from the ground, from under the sea. A rundown of some of the most sophisticated methods for gathering data:
SATELLITES. In 1972 the U.S. and Soviet Union agreed that a "national means of verification" could be used by both sides,...
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