Search

Search results

Displaying 111 - 120

Eclipses of the Sun and Moon, 2008

Note: The day of an eclipse is given in Universal Time (UT) and may start a day earlier or later depending on your time zone. (See Phenomena, 2008, to find time of eclipse.) February…

Eclipses of the Sun and Moon, 2009

Note: The day of an eclipse is given in Universal Time (UT) and may start a day earlier or later depending on your time zone. 26 January. Annular eclipse of the Sun. Visible from a…

The Koran/Sura LIV — The Moon

Sura LIV — The MoonMecca — 55 Verses In the Name of God, the Compassionate, the Merciful The hour hath approached and the MOON hath been cleft: But whenever they see a miracle they turn…

precession of the equinoxes

(Encyclopedia) CE5 Precession of the equinoxes (the points at which the earth's celestial equator intersects its ecliptic) is due to the slow rotation of the earth's axis around a perpendicular to…

Cleomedes

(Encyclopedia) CleomedesCleomedesklēˌōmēˈdēz, klēˌə– [key], fl. 2d cent., Greek astronomer. In a treatise on the circular theory of heavenly bodies, he recorded several hypotheses, e.g., the earth's…

Armstrong, Neil Alden

(Encyclopedia) Armstrong, Neil Alden, 1930–2012, American astronaut, b. Wapakoneta, Ohio, grad. Purdue Univ. (B.S., 1955), Univ. of Southern California (M.S., 1970). A U.S. Navy fighter pilot during…

Pandora, in astronomy

(Encyclopedia) PandoraPandorapăndôrˈə [key], in astronomy, one of the named moons, or natural satellites, of Saturn. Also known as Saturn XVII (or S17), Pandora is an irregularly shaped (nonspherical…

crescent

(Encyclopedia) crescent, emblematic representation of the quarter moon. The crescent and star, ancient Byzantine symbols that became the emblems of Constantinople, were also assumed as the standard…

Aristarchus of Samos

(Encyclopedia) Aristarchus of SamosAristarchus of Samosărˌĭstärˈkəs, [key]Aristarchus of Samosărˌĭstärˈkəs, sāˈmŏs [key], fl. c.310 b.c.–c.230 b.c., Greek astronomer and mathematician of the…

center of mass

(Encyclopedia) center of mass, the point at which all the mass of a body may be considered to be concentrated in analyzing its motion. The center of mass of a sphere of uniform density coincides with…