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Big Dipper (Ursae Majoris)

IAU: UMa

Ursa Major, the Great Bear, is the third-largest constellation in the sky and one of the most ancient and universally recognized star patterns. It contains the famous Big Dipper (or Plough) asterism, which has served as a celestial compass for navigators and travelers for thousands of years. The constellation is circumpolar for most northern latitudes, meaning it never sets below the horizon.

Hellster Stern
Alioth (1.77 mag)
Beste Beobachtungszeit
📅 March - May
Sichtbarkeit
🌍 Northern Hemisphere

📜 Mythologie

In Greek mythology, Zeus fell in love with Callisto, a beautiful nymph and follower of Artemis. When Hera, Zeus's jealous wife, discovered the affair, she transformed Callisto into a bear. Years later, Callisto's son Arcas, now a skilled hunter, encountered his mother in the forest but didn't recognize her. As he was about to kill her, Zeus intervened and placed them both in the sky - Callisto as Ursa Major and Arcas as Ursa Minor. Hera, still vengeful, forbade them from ever setting below the ocean, which explains why these constellations are circumpolar.

💡 Fakten

  • The two stars at the end of the Big Dipper's bowl (Dubhe and Merak) point directly to Polaris, the North Star
  • Five of the Big Dipper's seven stars are actually moving together through space as part of the Ursa Major Moving Group
  • Mizar and Alcor form a famous naked-eye double star in the handle of the Big Dipper
🌌In 3D-Sternkarte ansehen

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