Daredevil sky diver leaps into the record books Sound barrier is broken during 24-mile plunge ← Related Article Visit The Boston Globe Share on Twitter Share on Facebook Comment on this Scroll to top of page JOERG MITTER/RED BULL STRATOS VIA ASSOCIATED PRESS Pilot Felix Baumgartner of Austria celebrated with the project’s technical director, Art Thompson, after the mission. Ross D. Franklin/associated press Felix Baumgartner’s capsule rose under a helium balloon. Ross D. Franklin/associated press As the balloon rose, ground crew members waited to release the capsule. Balazs Gardi/associated press Baumgartner stepped out of his trailer and toward his capsule. Stefan Aufschnaiter/Associated Press Felix Baumgartner was seen in his capsule on a screen at mission control during his ascent. Ross D. Franklin/associated press Baumgartner’s mother, middle, watched with other family members as his capsule lifted off. Stefan Aufschnaiter/associated press Mission control monitored Baumgartner’s ascent to 128,000 feet. REUTERS Felix Baumgartner prepared to jump. REUTERS ‘‘Sometimes we have to get really high to see how small we are,’’ Baumgartner said after his jump. associated press/red bull stratos Organizers said the descent lasted just over nine minutes, about half of it in free fall. associated press/red bull stratos The 43-year-old former military parachutist has promised this would be his final jump.