The Sky

the upper atmosphere or expanse of space that constitutes an apparent great vault or arch over the earth

Misc. Natural History The Sky
Sunset with 'spokes'.
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The underside of a thundercloud, lit by the setting sun.
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Strange mushroom shaped cumulo-nimbus cloud formation.
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pink cirrus clouds, lit by the setting sun.
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Cumulus cloud formation, aspiring towards cumulo-nimbus.
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Evening star.
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Fluffy white cloud against a blue sky
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Underneath mamatus clouds
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