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sidereal time

(Encyclopedia)sidereal time (ST), time measured relative to the fixed stars; thus, the sidereal day is the period during which the earth completes one rotation on its axis so that some chosen star appears twice on ...

Acrux

(Encyclopedia)Acrux āˈkrəks [key] [from the Bayer designation α Crucis], brightest star in the constellation Crux (Southern Cross); 1992 position R.A. 12h26.2m, Dec. −63°04′. Its apparent magnitude of 0.86...

Pleiades, in astronomy

(Encyclopedia)Pleiades plēˈədēz, plīˈ– [key], in astronomy, famous open star cluster in the constellation Taurus; cataloged as M45. The cluster consists of some 500 stars, has a diameter of 35 light-years, ...

Betelgeuse

(Encyclopedia)Betelgeuse bētˈəljo͞ozˌ [key], bright star in the constellation Orion; Bayer designation α Orionis; 1992 position R.A. 5h54.8m, Dec. +7°24′. A red supergiant with a luminosity about 13,000 ti...

nova

(Encyclopedia)nova: see supernova; variable star. ...

cluster

(Encyclopedia)cluster, in astronomy: see star cluster; galaxy. ...

Trevino, Lee

(Encyclopedia)Trevino, Lee, 1939–, American golfer, b. Dallas, Tex. Personable, witty, and extremely popular, he won the U.S. Open twice (1968 and 1971), the British Open twice (1971–72), and the PGA Championsh...

Fly, river, New Guinea

(Encyclopedia)Fly, largest river of the island of New Guinea, c.650 mi (1,050 km) long, rising in the Star Mts. and flowing generally SE through Papua New Guinea to the Gulf of Papua. The Fly is navigable for steam...

Mira

(Encyclopedia)Mira mīˈrə [key], [Lat.,=marvelous], variable star in the constellation Cetus; Bayer designation Omicron Ceti; 1992 position R.A. 2h19.0m, Dec. −3°05′. The most famous long-period variable, Mi...

McGrory, Mary

(Encyclopedia)McGrory, Mary, 1918–2004, American journalist, b. Boston, grad. Emmanuel College. McGrory wrote with clarity, lyricism, and wit on the events and personalities of the five decades spanned by her gro...