Celestial navigation Celestial navigation Celestial navigation, also known as astronavigation, is the ancient and modern practice of position fixing that enables a navigator to transition through a space without having to rely on estimated calculations, or dead reckoning, to know their position. Celestial navigation uses "sights", or angular measurements taken between a celestial body (e.g. the Sun, the Moon, a planet, or a star) and the visible horizon. The Sun is most commonly used, but navigators can also use the Moon, a planet, Polaris, or one of 57 other navigational stars whose coordinates are tabulated in the nautical almanac and air almanacs.
Abnormal cannabidiol GPR18. Another possible target of abnormal cannabidiol is GPR55, which has also received much attention as a putative cannabinoid receptor, although a growing body of evidence points to lysophosphatidylinositol (LPI) as the endogenous ligand for GPR55. Further research suggests there are yet more additional cannabinoid receptors. Research of the effects on abnormal cannabidiol in mice has indicated that atypical cannabinoids have therapeutic potential in a variety of inflammatory conditions, including those of the gastrointestinal tract. After inducing colitis by means of trinitrobenzene sulfonic acid, wound healing of both human umbilical vein endothelial and epithelial cells was enhanced by the Abn-CBD.