APOD 1.7 -- Transit of Venus

The 2004 transit of Venus was the first of the such event to occur since 1882. It was a very important event as it was used to measure the effect that small rocky planets have on the apparent brightness of a star, as well as to see if the atmosphere of the planets being seen effected the observable dampening of a star. The 2004went over the majority of the countries in the northern hemisphere.The next transit of Venus will occur in 2012,  transit occur pairs.