A man uses his iPhone to photograph the
A man uses his iPhone to photograph the planet Venus passing in front of the sun from a live feed from the coelostat telescopes at the Griffith Observatory, one of the largest and most-visited public solar observatories in the world, in Los Angeles, California 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 / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/GettyImages)