Owners of fine radio receivers understand the clangor of nearby thunderstorms and the clatter of distant ones. But a third kind of static, a soft hissing, las been unexplained until last week. Karl Guthe Jansky of Bell Telephone Laboratories announced that hissing static comes from the Milky Way.
After studying the hiss for a year, Researcher Jansky determined that it was the effect of a 14.6-metre wave at a frequency of about 20 million cycles a second. If. like thunderstorms and street cars, the source of the static is terrestrial, the hiss should...
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