Transit Of Venus
The cosmic spectacle known as a 'transit of Venus took place June 5th-6th 2012. This rarity hasn't been observed since 2004 and after 2012 the next movement won't occur till 2117. For astronomers in the past the significance of such an event was to learn the size of the solar system. Today the findings hold a number of research opportunities.
Transits occur when a planet crosses between Earth and the Sun. The only planets able to perform such a movement are Mercury and Venus as they are closer to the Sun.
For those of you who missed it, want to know what exactly was seen? Nothing visually impressive to the novice, just a black dot moving against the sun.
pic source: nationalgeographic.com
This particular black dot transit known as Venus took a total of 6 hours and 40 minutes to pass.
To watch the phenomenon view the video below:
info source: wikipedia.org/wiki/Transit_of_Venus