Longest Total Solar Eclipse in 500 Years

The graphic shows the simulated image of a total eclipse of the Sun which is visible from within a narrow corridor that traverses half of Earth on July 22, 2009. [Photo: NASA] Have you ever seen a total solar eclipse? If not, you should not miss the chance to observe the spectacular natural phenomenon next month, which is said to be the longest one to occur in nearly 500 years in China. Wang