Trek.Today

World is a common name for the whole of human civilization, specifically human experience, history, or the human condition in general, worldwide, i.e. anywhere on Earth. In a philosophical context it may refer to: (1) the whole of the physical Universe, or (2) an ontological world (world disclosure). In a theological context, world usually refers to the material or the profane sphere, as opposed to the celestial, spiritual, transcendent or sacred...

Sunset or sundown is the daily disappearance of the Sun below the horizon as a result of Earth's rotation. The time of sunset is defined in astronomy as the moment the trailing edge of the Sun's disk disappears below the horizon in the west. The ray path of light from the setting Sun is highly distorted near the horizon because of atmospheric refraction, making the apparent astronomical sunset occur when the Sun’s disk is already about one diameter below the horizon...