Science: Venus Observed

Venus is the earth's nearest planetary neighbor (minimum distance: 26 million miles), but the dense white clouds that fill her atmosphere make her more mysterious than many a far-distant star. In Nature, Radioastronomer JohnD. Kraus of Ohio State University tells how he has added, he hopes, one new fact to the few known about Venus.

Since early spring Dr. Kraus has received irregular bursts of 11-meter radio waves from Venus. Every day he measured a rough peak of radio activity, and the peaks came earlier each day by a little less than two hours. After diagraming the peaks, Dr. Kraus concluded that...

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