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[i]A [URL=http://www.news8austin.com/content/top_stories/default.asp?ArID=232081]video of the fireball[/URL] has been released, taken by a person videotaping a footrace. The video matches the description of many eyewitnesses. ...the video shows the fireball to be moving very rapidly. Typically, meteors come into Earth's atmosphere at 20-50 km/sec (though they can be moving much faster), and burn up 50-100 km high. Man-made space debris re-entering is moving at slower than orbital speed so the max speed is about 8 km/sec. It also burns up lower, and generally you can see flames and whatnot coming off. I've seen man-made debris re-enter, and it's very different than natural meteors. The difference in speed is very obvious. Right there, that's enough to make me think this was a single natural object.[/i]
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