Sunsets are a part of nature which are naturally beautiful without modification or alteration.
The time of sunset is defined in astronomy as the moment when the upper limb of the Sun disappears below the horizon. Near the horizon, atmospheric refraction causes sunlight rays to be distorted to such an extent that geometrically the solar disk is already about one diameter below the horizon when a sunset is observed.Sunset creates unique atmospheric conditions such as the often intense orange and red colors of the Sun and the surrounding sky.
