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  2. Celestial pole - Wikipedia

    en.wikipedia.org/wiki/Celestial_pole

    The north and south celestial poles appear permanently directly overhead to observers at Earth's North Pole and South Pole, respectively. As Earth spins on its axis, the two celestial poles remain fixed in the sky, and all other celestial points appear to rotate around them, completing one circuit per day (strictly, per sidereal day ).

  3. List of stars for navigation - Wikipedia

    en.wikipedia.org/wiki/List_of_stars_for_navigation

    The 11 northern stars are those with a declination between 30° north and 90° north. They are listed in order of decreasing sidereal hour angle, or from the vernal equinox westward across the sky. Starting with Schedar in the constellation Cassiopeia, the list includes stars from the constellations Auriga, the Great and Little Bears, Draco ...

  4. Ziwei enclosure - Wikipedia

    en.wikipedia.org/wiki/Ziwei_enclosure

    The Purple Forbidden enclosure (紫微垣 Zǐ wēi yuán) is one of the San Yuan (三垣 Sān yuán) or Three Enclosures.Stars and constellations of this group lie near the north celestial pole and are visible all year from temperate latitudes in the Northern Hemisphere.

  5. North Pole - Wikipedia

    en.wikipedia.org/wiki/North_Pole

    While the South Pole lies on a continental land mass, the North Pole is located in the middle of the Arctic Ocean amid waters that are almost permanently covered with constantly shifting sea ice. The sea depth at the North Pole has been measured at 4,261 m (13,980 ft) by the Russian Mir submersible in 2007 [ 1 ] and at 4,087 m (13,409 ft) by ...

  6. List of northernmost settlements - Wikipedia

    en.wikipedia.org/wiki/List_of_northernmost...

    The most northern settlements on Earth are communities close to the North Pole, ranging from about 70° N to about 89° N.This is a list showing all of the northernmost settlements on Earth, which are all south of latitude 90° N.

  7. Right ascension - Wikipedia

    en.wikipedia.org/wiki/Right_ascension

    Right ascension is measured from the Sun at the March equinox i.e. the First Point of Aries, which is the place on the celestial sphere where the Sun crosses the celestial equator from south to north at the March equinox and is currently located in the constellation Pisces. Right ascension is measured continuously in a full circle from that ...

  8. Earth's magnetic North Pole is shifting toward Russia. What ...

    www.aol.com/news/earths-magnetic-north-pole...

    The magnetic North Pole is sometimes confused with the geographic North Pole, but this spot stays at the same place as it is where all lines of longitude converge.

  9. Pole star - Wikipedia

    en.wikipedia.org/wiki/Pole_star

    In 3000 BC, the faint star Thuban in the constellation Draco was the North Star, aligning within 0.1° distance from the celestial pole, the closest of any of the visible pole stars. [7] [8] However, at magnitude 3.67 (fourth magnitude) it is only one-fifth as bright as Polaris, and today it is invisible in light-polluted urban skies.