Venus is the second planet from the sun and the sixth largest. Venus'
orbit is the most circular of any planet, with an eccentricy of less than 1%.
Venus, perhaps because it is the brightest of planets known to the ancients,
Is named after the Greek goddess of love and beauty. The planet of Venus
has been known since prehistoric times and is the brightest object in the
sky with the exception of the sun and the moon.
Venus' rotation is somewhat unusual in that it is both very slow ( 243
Earth days per Venus day) and retrograde. In addition, the periods of
Venus' rotation and of its orbit are synchronized such that it always
presents the same face toward Earth when the two planets are at their
closest approach. The pressure of the planet's atmosphere at the surface is
90 atmospheres and is composed mostly of carbon dioxide. There are
several layers of clouds which are many kilometers thick and composed of
sulfuric acid.......
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