precession of the equinoxes
precession of the equinoxes The motion of the equinoxes along the ecliptic, arising from the combined motion of the equator (
lunisolar precession) and the ecliptic (
planetary precession); also known as general precession. It was first detected by the Greek astronomer
Hipparchus in about 130bc from the apparent increase in the observed celestial longitudes of stars. It amounts to about 50″.3 per year. Hence the equinoxes move westwards on the celestial sphere by 1 ° in about 72 years, and take 25 800 years to complete one circuit.
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Spring Equinox.
M2 Presswire; 3/20/2006; 682 words
; ...2006-UK Government: Spring Equinox(C)1994-2006 M2 COMMUNICATIONS...March 2006 marks the Spring Equinox. The day also traditionally...all about? Q: What is the equinox? A: The Equinox is one of...exhibits a slow, but steady precession through the years. Q: Is...
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UNITED KINGDOM: 20TH MARCH MARKS SPRING EQUINOX
News Wire article from: US Fed News Service, Including US State News; 3/17/2006; 529 words
; ...20 March 2006 marks the Spring Equinox. The day also traditionally...it all about? Q: What is the equinox? A: The Equinox is one of the two points in the...exhibits a slow, but steady precession through the years. Q: Is it...
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Fragments concerning freedom of the press: excerpts selected and translated by Arthur Goldhammer.
Magazine article from: Daedalus; 3/22/2002; ; 700+ words
; ...nevertheless have solved the problem of the precession of the equinoxes. The discovery of the circulation of the blood...like, publish a solution to the problem of the precession of equinoxes, set forth a general principle of mechanics...
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Herman Melville: Stargazer.(book)(Book review)
Magazine article from: Leviathan; 10/1/2005; ; 700+ words
; ...without taking into account the precession of the equinoxes. At the most, it might...about the precession of the equinoxes (26). In Brande's popular...under "precession of the equinoxes," we find the phenomenon...Encyclopedia, "The vernal equinox now happens when the sun...
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 "Sun, The: Lisle (IL)")
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Dog days already? Believe it
Newspaper article from: Sun, The: Lisle (IL); 7/11/2003; ; 700+ words
; ...latitude, and because of the precession of the equinoxes; it changes gradually over...periods in all latitudes. The precession of the equinoxes, or the westward...Newton first explained the precession of the equinoxes in 1687...
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Egypt's Legacy: The Archetypes of Western Civilization 3000-30 BC. (book reviews)
Magazine article from: History Today; 1/1/1998; ; 700+ words
; ...importance to human affairs of the Precession of the Equinoxes (a new zodiacal `Age...Around 2,000 BC, the vernal equinox was marked by the heliacal...have a blind spot about the Precession of the Equinoxes. The accepted wisdom is...
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From Deluge to Discourse: Myth, History, and the Generation of Chinese Fiction. (book reviews)
Magazine article from: Philosophy East and West; 4/1/1998; ; 700+ words
; ...events. Notably, it is the precession of the equinoxes that is addressed in these...seasons and the arrival of equinoxes by noting the appearance...horizon. However, due to the precession, over several generations...Neolithic China the spring equinox. Across this territory from...
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Constellation controversy fogs future for horoscope readers. (newly revised zodiac)
Magazine article from: Insight on the News; 3/27/1995; ; 700+ words
; ...which begins with Aries (at the vernal equinox in March), was introduced around 100...a phenomenon astronomers call "the precession of equinoxes.") As a result, the signs of the...calculations. The Aries Ingress' [the vernal equinox] is the first part of our calender...
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Amplitude and frequency modulations of the Earth's obliquity for the last million years
Magazine article from: Journal of Climate; 3/15/2001; ; 700+ words
; ...and of its axis of rotation (precession of the equinoxes and obliquity). The theory...obliquity), and 23 and 19 (precession) kyr (Hays et al. 1976...signals from obliquity and precession variations (Berger et al...
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The Complexity of Global Warming.
Magazine article from: World and I; 1/1/2002; 700+ words
; ...atmospheric temperature and climate changes, from the effects due to other sources, such as solar radiation, precession of equinoxes, nutation of the north-south Earth axis, and so forth. The authors correctly point out that there are...
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Precession of the Equinoxes
Encyclopedia entry from: The Gale Encyclopedia of Science
Precession of the Equinoxes The precession of the equinoxes (sometimes simply...intersection defines the equinox. The equator moves...called the planetary precession. These gravitational...ecliptic, and hence the equinox, to precess at a...
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precession of the equinoxes
Book article from: The Columbia Encyclopedia, Sixth Edition
precession of the equinoxes westward motion of the equinoxes...noted by Hipparchus c.120 BC The precession is due to the gravitational attraction...6 years. There is some further precession caused by the gravitational influences...
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Precession of the Equinox
Encyclopedia entry from: Encyclopedia of Occultism and Parapsychology
Precession of the Equinox Astrology as it is known...marked by the spring equinox, the sun rose in the...the precession of the equinoxes. There is some evidence...located on the spring equinox. However, that point...
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general precession
Book article from: A Dictionary of Astronomy
general precession Another name for precession of the equinoxes .
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precession
Book article from: A Dictionary of Astronomy
...of the Earth's axis. The equinoxes make one circuit of the ecliptic...same time. As a result of precession, the right ascension and declination...stated. See also lunisolar precession ; planetary precession ; precession of the equinoxes...
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