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ference, and the first steps were taken at that conference to clear channels for radio astronomy. The very important band of frequencies near the hydrogen line (1400 to 1427 Mcy/sec) was cleared, as a result of almost complete agreement. Various other frequency bands were given less protection, generally by allowing radio astronomy to share the band with other users. Although the results of the 1959 conference obviously fall short of all that radio astronomers hope for, the con-ference represents to scientists a very valuable first step. This article has attempted to show that further needs for clear frequency bands exist, and it has told of the work now going on in preparation for the next radio conference. There will be a special ITU conference in 1963 to allocate frequencies for radio communications for space research, and it is the hope of radio astronomers that their science and its needs may be further considered at that time.

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