The greatest star map in the world is nearing completion at the Paris Observatory, after 36 years of labor It records photographically 300,000,000 stars and other heavenly bodies visible through the most powerful telescopes. About 6,000 stars can be seen with the naked eye. With every new increase in the size of telescopes, new stars are revealed, and their number is apparently infinite. The map, with its accompanying catalogue, is the outcome of international coöperation between the astronomers of 18 nations who met in
1887 and agreed to subdivide the work. The central zones...
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