Felix Baumgartner, the professional daredevil, became the first sky diver Sunday to break the speed of sound. Brian Utley of the FAI, the international federation that certifies aerospace records, told reporters at a news conference that according to a preliminary analysis, Baumgartner reached a maximum speed of 833.9 mph during his jump from more than 24 miles over the New Mexico desert. That is a speed of Mach 1.24.
Unlimited access to BostonGlobe.com for only 99 cents for the first 4 weeks.Sign up
Are you a home delivery subscriber?
Get FREE access as part of your print subscriptionStart Here
Contact us for help