Venus transit 2012 begins as the world looks to the sky

Today, Venus will appear to dance across the sun, a rare phenomenon called the transit of Venus. The Venus transit, which will last for nearly seven hours and will look like the sun is being punctured by a small black dot,The Transit of Venus of 2012 has begun, and people across the world have begun seeing a black dot of Venus coast across the sun's disc. "This is a once-in-a-lifetime event because it won't happen again for another 105 years or so.On Tuesday (June 5), the Transit of Venus -- in which the planet Venus inches its way across the face of the Sun -- will be visible

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