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Airglow at night may be bright enough for a ground observer to notice and appears generally bluish. Although airglow emission is fairly uniform across the atmosphere, it appears brightest at about 10° above the observer's horizon , since the lower one looks, the greater the mass of atmosphere one is looking through.
Bliss, originally titled Bucolic Green Hills, is the default wallpaper of Microsoft's Windows XP operating system. It is a photograph of a green rolling hills and daytime sky with cirrus clouds . Charles O'Rear , a former National Geographic photographer, took the photo in January 1998 near the Napa – Sonoma county line, California, after a ...
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 ...
Sky brightness refers to the visual perception of the sky and how it scatters and diffuses light. The fact that the sky is not completely dark at night is easily visible. If light sources (e.g. the Moon and light pollution ) were removed from the night sky , only direct starlight would be visible.
A sprite at the horizon, with lightning below in the troposphere and above the green line of airglow at the upper mesopause and border to space (the bright light above is the Moon). First color image of a sprite, taken from an aircraft
ICYMI: What does the ‘exotic’ green comet look like in the night sky? 01:30 , Josh Marcus For the first time in 50,000 years, a stunning green comet has skipped past Earth, making a remarkably ...
A cumulonimbus cloud emitting green is a sign that it is a severe thunderstorm, [21] capable of heavy rain, hail, strong winds and possible tornadoes. The exact cause of green thunderstorms is still unknown, but it could be due to the combination of reddened sunlight passing through very optically thick clouds.
Cloudscape photography is photography of clouds or sky. An early cloudscape photographer, Belgian photographer Léonard Misonne (1870–1943), was noted for his black and white photographs of heavy skies and dark clouds. [1]