In this photo released by the Wildlife Conservation Society, a blue poison dart frog is perched on a rock at the Bronx Zoo, Tuesday, Sept. 9, 2008 in New York. The frog's blue color serves and an indicator for other species that its secretions are toxic.
Sunday, September 21, 2008
Space shuttle Atlantis
Space shuttle Atlantis on pad 39A, left, and space shuttle Endeavour on pad 39B stand ready at Kennedy Space Center in Cape Canaveral, Fla., Saturday, Sept. 20, 2008. Atlantis is targeted for an Oct. 10 launch on a mission to service the Hubble Space Telescope. Endeavour will be on standby in the unlikely event that a rescue mission for the Atlantis's crew would be necessary. After Endeavour is cleared from its duty as a rescue vehicle, workers will move it to pad 39A in preparation for a mission to the International Space Station on Nov. 12.
Blue Olympic performers
Performers take part in the opening ceremony of the Beijing 2008 Paralympic Games at the National Stadium, September 6, 2008. The stadium is also known as the Bird's Nest.
Planets collide
This artist's rendering, released September 19, 2008, shows a planetary collision in the constellation Aries. Masses of dust floating around a distant binary star system suggest that two Earth-like planets obliterated each other in a violent collision, U.S. researchers reported Friday.