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gibbous phase

(Encyclopedia)gibbous phase gĭbˈəs [key]: see phase, in astronomy. ...

Spitzer Space Telescope

(Encyclopedia)Spitzer Space Telescope: see infrared astronomy; observatory, orbiting. ...

propaganda

(Encyclopedia)propaganda, systematic manipulation of public opinion, generally by the use of symbols such as flags, monuments, oratory, and publications. Modern propaganda is distinguished from other forms of commu...

Oberon

(Encyclopedia)Oberon ōˈbərŏnˌ [key], in astronomy, one of the moons, or natural satellites, of Uranus. ...

Laurentian University

(Encyclopedia)Laurentian University, main campus at Sudbury, Ont., Canada; bilingual, coeducational; founded 1960. Among its faculties are those in astronomy, commerce, computer science, education, engineering, law...

Sycorax

(Encyclopedia)Sycorax sĭkˈərăksˌ [key], in astronomy, one of the natural satellites, or moons, of Uranus. ...

Umbriel

(Encyclopedia)Umbriel ŭmˈbrēĕlˌ [key], in astronomy, one of the moons, or natural satellites, of Uranus. ...

Phobos

(Encyclopedia)Phobos fōˈbŏs [key], in astronomy, innermost moon, or natural satellite, of Mars. ...

Portia

(Encyclopedia)Portia pôrˈshə [key], in astronomy, one of the natural satellites, or moons, of Uranus. ...

radial velocity

(Encyclopedia)radial velocity, in astronomy, the speed with which a star moves toward or away from the sun. It is determined from the red or blue shift in the star's spectrum. ...