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© Copyright by the observers
Clouds and mountains may cast impressive shadow rays into the sky.
If the sun is low or even below the horizon, the streaks may reach all across
the entire sky. These crepuscular rays seem to converge in the antisolar
point, the point of the sky just opposite the sun, and are therefore called
anti-crepuscular. This is, however, just a matter of viewing perspective.
In 3D-space the rays are parallel beams.
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