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zenith - the point above the observer that is directly opposite the nadir on the imaginary sphere against which celestial bodies appear to be projected...
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www.thefreedictionary.com/nadir
www.thefreedictionary.com/nadir
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zenith - the point above the observer that is directly opposite the nadir on the imaginary sphere against which celestial bodies appear to be projected...
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www.thefreedictionary.com/sphere
www.thefreedictionary.com/sphere
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Above your head is your zenith, while directly below you is your nadir (both of which are points on the celestial sphere). In between is the great circle of the horizon, which is the circle on the celestial sphere cut by a plane tangent to the Earth at your feet.
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stars.astro.illinois.edu/celsph.html
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The point where this line meets the celestial sphere is called the zenith. The zenith line, extended the other way through the opposite side of the earth meets the celestial sphere at a point called the nadir.
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library.thinkquest.org/29033/begin/coordinate.htm
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Definition of Nadir ... nadir; 1. [Astronomy]. The point of the celestial sphere directly opposite the zenith and directly below the observer. 2. The lowest point; the time of greatest depression or adversity;
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dictionary.babylon.com/nadir
dictionary.babylon.com/nadir
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nadir ( ) n. Astronomy . A point on the celestial sphere directly below the observer, diametrically opposite the zenith ... The lowest point: the nadir of their fortunes. ... (NAY-duhr, NAY-deer); noun; 1. The point on the celestial sphere directly below the observer, opposite the zenith. 2. The lowest point. Etymology;
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www.answers.com/topic/nadir
www.answers.com/topic/nadir
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zenith derived from Arabic samt ar-ras 'the way or road above one's head'; zenith technically is the point directly above the observer and nadir is the point directly below...
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thesaurus.reference.com/browse/nadir
thesaurus.reference.com/browse/nadir
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November 17, 2009 ... 1. The Benadiri Question in Southern Somalia; 2. Blunders of the Somali Reconciliation Conference; 3. The dismembering of Somalia in chronological order; 4. Massacre of Somali refugees crossing the Red Sea ; 5. Cases on crimes against humanity; 6. The oil question in Somalia ... "Despite the threats,
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www.benadir-watch.com/
www.benadir-watch.com/
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Ajisai 214 cm diameter sphere 1,436 1028 sphere: radius of phase center of each cube details; ... Beacon-C Pyramidal array on nadir face 160 ? phase center of each cube; ... BLITS 85.16 mm diameter sphere 1 (0, 0, 0) origin at center of the single sphere details;
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ilrs.gsfc.nasa.gov/satellite_missions/center_of_mass/in...
ilrs.gsfc.nasa.gov/satellite_missions/center_of_mass/index.html
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