Greg Bernhardt
Nov17-04, 06:11 AM
The US space agency flies an unmanned experimental jet to a speed in excess of 10,000km/h or 6,200mph.
http://news.bbc.co.uk/go/click/rss/0.91/public/-/1/hi/sci/tech/4018117.stm
http://news.bbc.co.uk/go/click/rss/0.91/public/-/1/hi/sci/tech/4018117.stm