No. 88: Jul-Aug 1993
A report from the annual meeting of the American Astronomical Society. Over the past fourteen months, a radio telescope in Puerto Rico has analyzed over 30 billion signals, as it kept its 1,000-foot metallic ear cocked for messages wafting in from out space. Of this large number, only 164 signals cannot be explained either in terms of natural phenomena or human causes. Since some of these 164 signal sources are fixed in the same locations in the sky, they just might mean that "something" is trying to get our attention, or the attention of "something else" more intelligent than ourselves!
(Anonymous; "Mystery Signals Beam from Space," Baltimore Sun, p. 2A, June 9, 1993.)