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German astronomer Johannes Kepler began observations of an exceptionally bright object, now known as Kepler's Supernova, that had appeared in the constellation Ophiuchus.
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Johannes Kepler
German astronomer and mathematician (1571–1630)
Johannes Kepler was a German astronomer, mathematician, astrologer, natural philosopher and writer on music. He is a key figure in the 17th-century Scientific Revolution, best known for his laws of planetary motion, and his books Astronomia nova, Harmonice Mundi, and Epitome…Source: Wikipedia (CC BY-SA)
Kepler's Supernova
Supernova visible from Earth in the 17th century
SN 1604, also known as Kepler's Supernova, Kepler's Nova or Kepler's Star, was a Type Ia supernova that occurred in the Milky Way, in the constellation Ophiuchus. Appearing in 1604, it is the most recent supernova in the Milky Way galaxy to have been unquestionably observed by…Source: Wikipedia (CC BY-SA)
Ophiuchus
Constellation straddling the celestial equator
Ophiuchus is a large constellation straddling the celestial equator. Its name comes from the Ancient Greek ὀφιοῦχος (ophioûkhos), meaning "serpent-bearer", and it is commonly represented as a man grasping a snake. The serpent is represented by the constellation Serpens.…Source: Wikipedia (CC BY-SA)