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NASA Project Cameo Barium Cloud Over Alaska

The space agency released barium from a satellite over Alaska Sunday, creating glowing, bluish-white clouds for a weather experiment to study the movement of particles in the earth’s atmosphere. Within several hours the spreading clouds were spotted by tracking telescopes as far as Arizona and Hawaii, although they were too high to be visible to the naked eye except in Alaska, the National Aeronautics and Space Administration said.
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