Photos: The transit of Venus across the face of the Sun
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Credit: AFP/Getty Images
Venus crosses the sun's face as seen from Mexico City on June 5, 2012. Astronomers around the world are training their telescopes on the skies to watch Venus pass in front of the Sun, a once-in-a-lifetime event that will not be seen for another 105 years. AFP PHOTO/Omar Torres (Photo credit should read OMAR TORRES/AFP/GettyImages)
