Runners in Sunday's Austin marathon were astonished when a brilliant fireball raced across the Texas sky in broad daylight. The extremely-bright meteor descended at 11 am CST on Feb. 15th less than a day after the FAA reportedly warned U.S. pilots to watch for "falling space debris" from the recent satellite collision between Iridium 33 and Kosmos 2251.

What you just saw was not satellite debris. The high speed of the fireball in the News 8 video is typical of a natural meteoroid hitting Earth's atmosphere at tens of km/s. Orbital debris, on the other hand, should crawl across the sky at a fraction of that speed. Astronomer Bill Cooke of NASA's Meteoroid Environment Office has analyzed the video and confirms "it's a natural meteor, definitely." According to Cooke's analysis, the source of the fireball was a meter-class asteroid traveling at about 20 km/s....Info from SpaceWeather.com (February 15, 2009)