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The area encompassed by the two regions is nearly half the size of the full moon as viewed from Earth and 70 times the original Hubble Deep Field North. Larger surveys of similar quality are needed to decide if the differences between Hubble Deep Field North and South are normal variations or whether one of the fields is atypical of the rest of the universe," Labbe says. Many astronomers have used the data compiled from that region of sky, known as the Hubble Deep Field North, as a basis for further studies at a variety of wavelengths (SN: 1/20/96, p. |
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