Night
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Night, or nighttime, is the period of darkness when the Sun is below the horizon. Daylight illuminates one side of Earth, leaving the other in darkness. The opposite of nighttime is daytime. Earth's r
A French chapel under a starry night sky, with the Milky Way visible and skyglow over the horizon
The drainage basin of the Nile River and delta at night
Sunset on Mars
Nocturnal insects drawn to an artificial light
Twilight
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Twilight is daylight illumination produced by diffuse sky radiation when the Sun is below the horizon as sunlight from the upper atmosphere is scattered in a way that illuminates both the Earth's lowe
Night
…causes the appearance of sunrise and sunset. Moonlight, airglow, starlight, and light pollution dimly illuminate night. The duration of day, night, and twilight varies depending on the time of year and the observer's latitude. Night on other celestial bodies is affected by their rotation and orbital periods…
Twilight over a lake
Twilight as viewed from space
Midtown Manhattan during civil twilight, demonstrating blue hour
Civil twilight in a small town in the Mojave Desert