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    • Polaris (α Ursae Minoris) Facts - The Nine Planets
      • The Polaris system and its stars are believed to have formed around 70 million years ago from a nebular cloud of gas and dust. Gravity pulled the swirling gas and dust together and resulted in the triple star system that we now see and still use for navigation.
      nineplanets.org/polaris-α-ursae-minoris/

      Polaris (α Ursae Minoris) Facts - The Nine Planets

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  3. www.star-facts.com › polarisPolaris (the North Star) - Star Facts

    5 days ago · Polaris, Alpha UMi Aa, is a yellow supergiant of the spectral type F7Ib. It has a mass 5.13 times that of the Sun and has expanded to a size of 37.5 – 46.27 solar radii as it evolved away from the main sequence. The supergiant was the first variable star of its type to have its mass calculated from its orbit.

  4. www.britannica.com › place › Polaris-starPolaris | Location, Constellation, & Facts | Britannica

    Aug 29, 2024 · Polaris, Earth’s present northern polestar, or North Star, at the end of the ‘handle’ of the so-called Little Dipper in the constellation Ursa Minor. Polaris is actually a triple star. It is located about 447.6 light-years from Earth and is the closest Cepheid variable.

    • The Editors of Encyclopaedia Britannica

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  6. theplanets.org › stars › polaris-starPolaris Star – Facts and Info about the North Star

    Polaris, also known as the North Star, is the brightest star in Ursa Minor constellation and the closest bright star to the North Celestial Pole. Learn about its location, distance, system, history and future as the pole star.

  7. en.wikipedia.org › wiki › PolarisPolaris - Wikipedia

    Polaris is the brightest star in the constellation of Ursa Minor and the current northern pole star. It is also a variable star that changes in brightness and has a binary companion. Learn about its history, characteristics, location and distance.

  8. earthsky.org › brightest-stars › polaris-the-presentPolaris is the present-day North Star - EarthSky

    May 9, 2024 · Polaris is the brightest star near the north celestial pole, which marks the direction of north in the sky. Learn how to find Polaris using the Big Dipper, its history, and its triple star...

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  9. skyandtelescope.org › astronomy-news › meet-polarisMeet Polaris, the North Star - Sky & Telescope

    Apr 19, 2018 · Learn about Polaris, the star that lines up with Earth's axis and never moves in the sky. Find out its physical characteristics, history, mythology, and how to locate it using the Big Dipper.

  10. www.scientificamerican.com › article › how-old-isHow Old Is the North Star? The Answer Could Change Our Maps ...

    May 31, 2024 · What Anderson found is that almost all the physical characteristics of Polaris Aa are consistent with a star that has seven times the mass of the sun at 521 light-years distant, agreeing with...

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