HomeSpace NewsSee Cassiopeia high in the sky over Ursa Major tonight (Oct. 14)

See Cassiopeia high in the sky over Ursa Major tonight (Oct. 14)

As the Earth completes one turn on its axis every 23 hours and 56 minutes, the sky seems to wheel overhead. To sky watchers in the north temperate zone, the stars that are near to the north celestial pole constantly remain in view as they sweep around, while stars near to the celestial equator appear to rise and set. 

Several star patterns are arranged around the pole and not very far from it. These are the circumpolar constellations. They can appear high or low in the sky as they wheel around the North Star (Polaris) but they never rise or set and can be seen anytime of the year. As viewed from latitude 40-degrees north Ursa Minor, Cassiopeia, Cepheus, Draco and Camelopardalis are constellations that fall into this category. 

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