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Text File  |  1992-09-03  |  249b  |  7 lines
  1. A type of radio telescope consisting of two
  2. rows of aerials at right angles to each
  3. other, invented 1953 by the Australian radio
  4. astronomer Bernard Mills. The cross-shape
  5. produces a narrow beam useful for pinpointing
  6. the positions of radio sources.
  7.