ROYAL ASTRONOMICAL SOCIETY / SCIENCE PHOTO LIBRARY ROYAL ASTRONOMICAL SOCIETY / SCIENCE PHOTO LIBRARY
Delphinus constellation, 15th century artwork. Engraving of the dolphin Delphinus, showing black asterisks that indicate the position of the stars that make up this constellation. This illustration is from Poeticon Astronomicon (Poetic Astronomy), a star atlas by Hyginus that was published in 1482.
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