NASA Science News for May 18, 2012
It won't happen again until December 2117. On June 5th, 2012, Venus will transit the face of the sun. The best places to watch are in the mid-Pacific, but travel is not required. The historic event is widely visible around the world, including at sunset from the USA.
FULL STORY: http://science.nasa.gov/science-news/science-at-nasa/2012/18may_venustransit/
VIDEO: http://www.youtube.com/watch?v=-nXv9YvkNyA