During the day the Sun can be seen in the sky, unless
obscured by clouds. In the night sky (and to some
extent during the day) the moon, planets and stars are
visible in the sky. Some of the natural phenomena seen
in the sky are clouds, rainbows, and aurorae.
Lightning and precipitation can also be seen in the
sky during storms. On Earth, birds, insects, aircraft,
and kites are often considered to fly in the sky.

The sky can turn a multitude of colors such as red,
orange, purple and yellow (especially near sunset or
sunrise) and black at night. Scattering effects also
partially polarize light from the sky, most pronounced
at an angle 90¡ã from the sun.

The sky makes the earth more amazing than other
planets, the Calendar Sky theme package for Flip
programs are designed with the stunning sky images.
Enjoy the colorful sky templates to build nice page-
flipping books, and remind readers to protect the

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