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Description: Spectrum of blue sky somewhat near the horizon pointing east at around 3 or 4 pm on a clear day. Spectrum was taken using an Ocean Optics HR2000 spectrometer with a high-OH solarization-resistant fiber optic light guide. this spectrum is NOT BY ANY MEANS IDEAL and was taken from inside a laboratory through probably 4 panes of window glass, thus completely attenuating virtually all ...
The blue sky spectrum contains light at all visible wavelengths with a broad maximum around 450–485 nm, the wavelengths of the color blue. Diffuse sky radiation is solar radiation reaching the Earth 's surface after having been scattered from the direct solar beam by molecules or particulates in the atmosphere .
Chinese character Qi (气), Spring and Autumn period The clouds physical characteristics (being wispy and vaporous in nature) were associated with the Taoist concept of qi (气; 氣), especially yuanqi, [3]: 133 and the cosmological forces at work; [1] [note 4] i.e. the yuanqi was the origins of the Heavens and Earth, and all things were created from the interaction between the yin and yang.
View of the night sky in July The day's blue sky, clouds and the Moon. The sky is an unobstructed view upward from the surface of the Earth. It includes the atmosphere and outer space. It may also be considered a place between the ground and outer space, thus distinct from outer space.
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A sprite over Southeast Asia as seen from space.. Sprites or red sprites are large-scale electric discharges that occur in the mesosphere, high above thunderstorm clouds, or cumulonimbus, giving rise to a varied range of visual shapes flickering in the night sky.
In addition the majority of the LBVs in the Magellanic Clouds have been identified, several dozen in M31 and M33, plus a handful in other local group galaxies. [28] η Carinae, a luminous blue variable as seen from the Chandra X-ray Observatory HD 168607 is the right star of the pair below the Omega Nebula. The other is the hypergiant HD 168625.
Star system Nebula Median distance () Stars in system Spectral type Apparent magnitude (V) Comments and references P Cygni (34 Cygni) : 5251±180: 1: B1-2 Ia-0ep: 4.82: The closest luminous blue variable star to Earth