Thread: planet venus???
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Math Is Hard
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Jul5-06, 01:23 AM
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planet venus???


Just to clarify, let's not confuse "revolve" and "rotate" here:
If viewed from above the Sun's north pole, all of the planets are orbiting in an anticlockwise direction; but while most planets also rotate anticlockwise, Venus rotates clockwise in "retrograde" rotation. The question of how Venus came have a slow, retrograde rotation was a major puzzle for scientists when the planet's rotation period was first measured. When it formed from the solar nebula, Venus would have had a much faster, prograde rotation, but calculations show that over billions of years, tidal effects on its dense atmosphere could have slowed down its initial rotation to the value seen today.
http://en.wikipedia.org/wiki/Venus