Last flight of the Space Shuttle Endeavor begins with a ring of fire

It's the penultimate flight of NASA's Space Shuttle program, and it began yesterday with an amazing launch that took Endeavor dramatically through a layer of cloud, leaving behind a ring of fire that looked as if the vessel had zoomed into a wormhole. You can get this incredible photograph in several sizes over at… »5/17/11 1:49pm5/17/11 1:49pm