a guidance system for an aeronautical or space vehicle by which an automatic device in the vehicle takes periodic fixes on celestial bodies to determine the vehicle’s position and to guide it along a particular flight path.
the guidance of a spacecraft or missile by reference to the position of one or more celestial bodies
hierarchy (def 6).
See under horizon (def 2b). the line or circle that forms the apparent boundary between earth and sky. Astronomy. the small circle of the celestial sphere whose plane is tangent to the earth at the position of a given observer, or the plane of such a circle (sensible horizon) Also called rational horizon. the great […]
the angular distance from the ecliptic of a point on the celestial sphere. noun the angular distance of a celestial body north or south from the ecliptic Also called ecliptic latitude celestial latitude On the celestial sphere, the position of a celestial object north or south of the ecliptic. Celestial latitude is measured in degrees […]
the rite or state of marriage, performed in a Mormon temple by the Church of Jesus Christ of Latter-day Saints and believed to continue beyond death.