Moon clouds. The illuminated area of the visible sphere (degree of illumination) is given by formula_3, where formula_4 is the elongation (i.e., the angle between Moon, the observer (on Earth) and the Sun). The gravitational attraction that masses have for one another decreases inversely with the square of the distance of those masses from each other. As a result, the slightly greater attraction that the Moon has for the side of Earth closest to the Moon, as compared to the part of the Earth opposite the Moon, results in tidal forces. Tidal forces affect both the Earth's crust and oceans. The
Union of the Sun and Moon Union of the Sun and Moon The Union of the Sun and Moon () is one of the Seventeen tantras of the esoteric instruction cycle () which are a suite of tantras known variously as: Nyingtik, Upadesha or Menngagde within Dzogchen discourse. "This tantra shows which experience a person undergoes in the intermediate state, the bardo, after passing away. It teaches how to resolve one's master's oral instructions during the bardo of this life, how to stabilize awareness during the bardo of dying, how to attain enlightenment through recognizing awareness during the bardo of dharmata, and, if necessary, how to