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| Capella |
a yellow triple star in the constellation Auriga, having a magnitude of 0.1. |
| Castor |
a white triple star, each component of which is a double star, in the constellation Gemini, having a combined magnitude of 2.5. |
| celestial body |
a natural object found outside earth's atmosphere, such as a planet, moon, star, or asteroid. |
| Cetus |
an autumn constellation in the northern sky, located below Pisces and Aries and containing the variable star Mira. |
| Chinese checkers |
a board game for two to six players in which marbles are moved across a pattern of holes that resembles a six-pointed star. |
| chromosphere |
a layer of gas, mostly hydrogen, that surrounds a star, esp. the sun, above the photosphere and below the corona. |
| collapsar |
a collapsed star that has become a black hole. |
| corona |
the irregular region of ionized gases surrounding a star. [1/5 definitions] |
| coronagraph |
telescopic equipment that blocks light from a star so that the star's corona and objects close to the star can be resolved. |
| Cygnus |
a summer constellation in the northern sky that is shaped like a cross, located between Cepheus and Aquila and containing the bright star Deneb and a double star; Swan; Northern Cross. |
| Deneb |
the brightest star in the constellation Cygnus, having a magnitude of 1.2. |
| dog days |
the hot, humid days of July and August, when the Dog Star, Sirius, rises and sets with the sun. |
| Draco |
a circumpolar constellation in the northern sky, located between Ursa Major and Ursa Minor and containing the former north star used by the Egyptians; Dragon. |
| dwarf |
a dwarf star. [1/7 definitions] |
| dwarf star |
a star of relatively small size and low mass and luminosity. (See white dwarf.) |
| escape velocity |
the minimum speed by which an object can become free from the field of gravity of a planet, star, or the like. |
| exoplanet |
a planet that orbits a star that is not our sun. |
| falling star |
a meteor; shooting star. |
| fixed star |
any star that appears to be in a fixed position relative to other stars. |
| galaxy |
(usu. cap.) such a star system that contains Earth; the Milky Way. [1/3 definitions] |
| giant |
a giant star. [1/5 definitions] |
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