Millions watch 'ring of fire' eclipse

A man practices taichi during an eclipse at the Bund along the Huangpu River in Shanghai May 21, 2012. The sun and moon aligned over the earth in a rare astronomical event - an annular eclipse that dimmed the skies over parts of Asia and North America, briefly turning the sun into a blazing ring of fire.

Photo by REUTERS/Aly Song May 21, 2012