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Skyglow (or sky glow) is the diffuse luminance of the night sky, apart from discrete light sources such as the Moon and visible individual stars. It is a commonly noticed aspect of light pollution . While usually referring to luminance arising from artificial lighting , skyglow may also involve any scattered light seen at night, including ...
Airglow over Auvergne, France Yellow, green and red bands of airglow along Earth's limb as seen from space.. Airglow (also called nightglow) is a faint emission of light by a planetary atmosphere.
Paranal Observatory nights. [3] The concept of noctcaelador tackles the aesthetic perception of the night sky. [4]Depending on local sky cloud cover, pollution, humidity, and light pollution levels, the stars visible to the unaided naked eye appear as hundreds, thousands or tens of thousands of white pinpoints of light in an otherwise near black sky together with some faint nebulae or clouds ...
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Time Machine is an American game show where contestants compete to answer trivia questions about popular culture and recent history to win prizes. The show aired on NBC from January 7 through April 26, 1985, and was hosted by John Davidson . [ 1 ]
Zodiacal light spans the entire sky and contributes [7] to the natural light of a clear and moonless night sky. A related phenomenon is gegenschein (or counterglow ), sunlight backscattered from the interplanetary dust, which appears directly opposite to the Sun as a faint but slightly brighter oval glow.
It is commonly stated that the gegenschein was first described by the French Jesuit astronomer and professor Esprit Pézenas [] (1692–1776) in 1730. Further observations were supposedly made by the German explorer Alexander von Humboldt during his South American journey from 1799 to 1803.
This model of Zeiss projector was a 13-foot (4.0 m)-long dumbbell-shaped object, with 29-inch (740 mm)-diameter spheres attached at each end representing the night sky for the northern and southern hemispheres. Connecting the two spheres was a framework that held nearly 150 individual projectors, including those dedicated to the planets, the ...