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Bahr el Jebel

(Encyclopedia)Bahr el Jebel bäˈhər ĕl jĕbˈĕl [key], river, 594 mi (956 km) long, section of the White Nile, central South Sudan, Africa. The name is usually used for the White Nile between Nimule, where it e...

Spotted swine

(Encyclopedia)Spotted swine, breed that is predominantly black with many white spots. Except for its additional white coloring, it is much like the Poland China swine, which together with Gloucester Old Spot hogs f...

Thomas, Helen Amelia

(Encyclopedia)Thomas, Helen Amelia, 1920–2013, American journalist, b. Winchester, Ky., grad Wayne State Univ. (B.A., 1942). The daughter of Lebanese immigrants, she was a pioneering woman journalist in an era do...

Magellanic Clouds

(Encyclopedia)Magellanic Clouds măjˌəlănˈĭk [key], two dwarf galaxies located in the far southern sky and visible to the unaided eye; they are classified as irregular because they show no definite symmetry or...

Alpha Centauri

(Encyclopedia)Alpha Centauri ălˈfə sĕntôrˈē [key], brightest star in the constellation Centaurus and 3d-brightest star in the sky; also known as Rigil Kent or Rigil Kentaurus; 1992 position R.A. 14h39.1m, De...

Bode's law

(Encyclopedia)Bode's law [for J. E. Bode], also known as Titius's law or the Titius-Bode law, empirical relationship between the mean distances of the planets from the sun. If each number in the series 0, 3, 6, 12,...

color index

(Encyclopedia)color index, in astronomy, difference in an object's brightness as recorded between any two well-defined bands of the electromagnetic spectrum by using optical filters of different colors. If blue and...

English springer spaniel

(Encyclopedia)English springer spaniel, breed of medium-sized sporting dog developed in England from the broader and very old category of “springing spaniels” that produced many of the present-day land spaniels...

palomino horse

(Encyclopedia)palomino horse, American light horse that, contrary to popular opinion, is not a breed but a color type. The palomino is a characteristic golden, creamy tan, with an almost white mane and tail. White ...

Spectral Classes for Main Sequence Stars (table)

(Encyclopedia)Characteristics of Spectral Classes for Main Sequence Stars ...