A circumpolar star is a star that, as viewed from a given latitude on Earth, never sets (that is, never disappears below the horizon), due to its proximity to one of the celestial poles. Circumpolar stars are therefore visible from said location towards nearest pole for the entire night on every night of the year (and would be continuously visible throughout the day too, were they not overwhelmed by the Sun's glare).
All circumpolar stars are within the circumpolar circle. This was in fact the original meaning of "Arctic Circle", before the current geographical meaning, meaning "Circle of the Bears" (Ursa Major, the Great Bear; and Ursa Minor, the Little Bear), from Greek αρκτικός (arktikos), "near the Bear", from the word άρκτος (arktos) bear.
Read more about Circumpolar Star: Explanation, Definition of Circumpolar Stars
Famous quotes containing the word star:
“In Washington, the first thing people tell you is what their job is. In Los Angeles you learn their star sign. In Houston you’re told how rich they are. And in New York they tell you what their rent is.”
—Simon Hoggart (b. 1946)