Along a great arc sweeping from the equator in mid-Atlantic to Irkutsk in central Siberia, the sun will be in total eclipse on Feb. 25. Last week an expedition of scientists from the U.S. Air Force, the Naval Research Laboratories, the National Geographic Society and the Universities of Denver and Colorado set out for way stations on the eclipse's 70-mile-wide path. When the moon's shadow climbs northeastward over half the world, the experts will be waiting with telescope, camera and electronic recording equipment. By their observations they hope: 1) to correct their maps and charts, 2) learn something about weather prediction...
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