little bear
Học thuậtThân thiện
Definition
Proper noun A constellation in the northern sky, also known as Ursa Minor. It is notable for containing Polaris, the current North Star, around which the constellation appears to rotate. It is a circumpolar constellation, meaning it is visible year-round from northern latitudes.
Usage
The term "Little Bear" is used to refer to the specific constellation Ursa Minor. It is often used in astronomy, navigation, and mythology. * In astronomy, the Little Bear is most famous for Polaris, which marks the end of its "tail" or handle. * The Little Bear is smaller and fainter than its counterpart, the Big Bear (Ursa Major).
Examples
- Astronomy: "To find Polaris, first locate the Big Dipper and then follow an imaginary line to the Little Bear."
- Mythology: "In Greek myth, the Little Bear represents Arcas, the son of the nymph Callisto (the Big Bear)."
- Observation: "On a clear night, the seven main stars of the Little Bear form a shape resembling a small ladle."
Advanced Usage
- "The Little Bear" is the common English name for the constellation . The name is always capitalized when referring to the constellation.
- In celestial navigation, the position of the Little Bear has been crucial for determining true north.
Variants and Related Words
- Ursa Minor: The Latin/scientific name for the Little Bear constellation.
- The Little Dipper: A common asterism (a recognizable star pattern) within the Little Bear, formed by its seven brightest stars. While often used interchangeably in casual conversation, "Little Dipper" technically refers to the star pattern, and "Little Bear" refers to the official constellation boundary.
- Polaris / North Star: The brightest star in the Little Bear, located very close to the north celestial pole.
Synonyms
- Ursa Minor (scientific synonym)
Related Phrases and Terms
- Circumpolar constellation: A description for the Little Bear, as it never sets below the horizon for observers in the Northern Hemisphere.
- Cynosura: An ancient name for the constellation, from which the word "cynosure" (meaning a center of attention) is derived.
Noun
- a constellation outside the zodiac that rotates around the North Star