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National Geographic : 1974 May
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Larger and larger grow the bowls of radio telescopes as scientists strive to corral fainter and fainter incoming waves. Astronomers estimate that all the energy received by all the radio telescopes ever built equals only the impact of a few snowflakes on the ground. Yet these metallic eyes stand in the forefront of astronomy-discoverers of quasars, pulsars, and interstellar molecules. 614 National Geographic, May 1974
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