Facts about Ursa Major Constellation

1. 07

   Five of the seven stars forming the Big Dipper asterism in Ursa Major share a common motion through space, indicating they were born together approximately 500 million years ago.

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2. 06

   Roughly 99 percent of Ursa Major's stars lie between 50 and 200 light-years from Earth, making this constellation's stellar population relatively close to our solar system in cosmic distance.

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3. 05

   Alcor, the faint companion star to Mizar in Ursa Major's handle, was used by ancient Arabs as an eyesight test around 1000 CE.

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4. 04

   Dubhe, the brightest star in Ursa Major at magnitude 1.79, is an orange giant located approximately 123 light-years away that has exhausted its core hydrogen fuel.

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5. 03

   Ancient Babylonians documented Ursa Major around 1300 BCE, recognizing it as a celestial marker for navigation and timekeeping in their astronomical records.

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6. 02

   Alkaid, the brightest star marking Ursa Major's tail, is approximately 101 light-years from Earth and burns through its hydrogen reserves about 1,000 times faster than our Sun.

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7. 01

   The Big Dipper asterism within Ursa Major contains Mizar, which in 1650 became the first binary star system discovered by telescope.

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