By Jesse Paul, The Denver PostNASA confirmed that a fireball seen rocketing across the sky early Wednesday in Colorado that sparked speculation and dropped jaws across the state was in fact a meteor. "The available eyewitness and video information indicates that the meteor moved from east to west at about 45,000 miles per hour and weighed a few pounds," said Bill Cooke, lead for the meteoroid environments office at NASA. Cooke said preliminary estimates are that the meteor weighed between two and four pounds. "The fireball belongs to a class of meteors called Earthgrazers, which hit the Earth's atmosphere at a very shallow angle," he said.