The capsule, bottom left, and attached helium balloon carrying Felix Baumgartner lifts off as he attempts to break the speed of sound with his own body by jumping from a space capsule lifted by a helium balloon, Sunday, Oct. 14, 2012, in Roswell, N.M. Baumgartner plans to jump from an altitude of 120,000 feet, an altitude chosen to enable him to achieve Mach 1 in free fall, which would deliver scientific data to the aerospace community about human survival from high altitudes.(AP Photo/Ross D. Franklin)
The capsule, bottom left, and attached helium balloon carrying Felix Baumgartner lifts off as he attempts to break the speed of sound with his own body by jumping from a space capsule lifted by a helium balloon, Sunday, Oct. 14, 2012, in Roswell, N.M. Baumgartner plans to jump from an altitude of 120,000 feet, an altitude chosen to enable him to achieve Mach 1 in free fall, which would deliver scientific data to the aerospace community about human survival from high altitudes.(AP Photo/Ross D. Franklin)
The capsule and attached helium balloon carrying Felix Baumgartner lifts off as he attempts to break the speed of sound with his own body by jumping from a space capsule lifted by a helium balloon, Sunday, Oct. 14, 2012, in Roswell, N.M. Baumgartner plans to jump from an altitude of 120,000 feet, an altitude chosen to enable him to achieve Mach 1 in free fall, which would deliver scientific data to the aerospace community about human survival from high altitudes.(AP Photo/Ross D. Franklin)
As the sun rises, workers prepare at the launch site, ahead of an attempt by Felix Baumgartner to break the speed of sound with his own body by jumping from a space capsule lifted by a helium balloon, Sunday, Oct. 14, 2012, in Roswell, N.M. Baumgartner plans to jump from an altitude of 120,000 feet, an altitude chosen to enable him to achieve Mach 1 in free fall, which would deliver scientific data to the aerospace community about human survival from high altitudes.(AP Photo/Ross D. Franklin)
This photo provided by Red Bull Stratos shows pilot Felix Baumgartner of Austria reacting after his mission was aborted in Roswell, N.M., Tuesday, Oct. 9, 2012. For the second straight day, extreme athlete Felix Baumgartner aborted his planned death-defying 23-mile free fall because of the weather, postponing his quest to become the world's first supersonic skydiver until at least Thursday. (AP Photo/Red Bull Stratos, Joerg Mitter)
A spotlight illuminates the capsule, ahead of an attempt by Felix Baumgartner to break the speed of sound with his own body by jumping from a space capsule lifted by a helium balloon, Sunday, Oct. 14, 2012, in Roswell, N.M. Baumgartner plans to jump from an altitude of 120,000 feet, an altitude chosen to enable him to achieve Mach 1 in free fall, which would deliver scientific data to the aerospace community about human survival from high altitudes.(AP Photo/Ross D. Franklin)
ROSWELL, N.M. (AP) ? Extreme athlete Felix Baumgartner landed safely on Earth after a 24-mile jump from the stratosphere in a dramatic, daring feat that may also have marked the world's first supersonic skydive.
Baumgartner came down in the eastern New Mexico desert minutes after jumping from his capsule 128,097 feet, or roughly 24 miles, above Earth. He lifted his arms in victory shortly after landing, sending off loud cheers from jubilant onlookers and friends inside the mission's control center in Roswell, N.M.
It wasn't immediately certain whether he had broken the speed of sound during his free-fall, which was one of the goals of the mission. Organizers said the jump lasted for just over nine minutes, about half of it in free-fall.
Three hours earlier, Baumgartner, known as "Fearless Felix," had taken off in a pressurized capsule carried by a 55-story ultra-thin helium balloon. As he exited his capsule from high above Earth, he flashed a thumbs-up sign, aware that his feat was being shown on a live-stream on the Internet.
During the ensuing jump from more than three times the height of the average cruising altitude for jetliners, Baumgartner was expected to hit a speed of 690 mph.
Any contact with the capsule on his exit could have torn his pressurized suit, a rip that could expose him to a lack of oxygen and temperatures as low as minus-70 degrees. That could have caused lethal bubbles to form in his bodily fluids
He activated his parachute as he neared Earth, gently gliding into the desert east of Roswell.
Coincidentally, Baumgartner's attempted feat also marked the 65th anniversary of U.S. test pilot Chuck Yeager successful attempt to become the first man to officially break the sound barrier aboard an airplane.
At Baumgartner's insistence, some 30 cameras recorded the event Sunday. While it had been pegged as a live broadcast, it was actually under a 20-second delay. Shortly after launch, screens at mission control showed the capsule as it began rising high above the New Mexico desert, with cheers erupting from organizers. Baumgartner could be seen on video, calmly checking instruments inside the capsule.
Baumgartner's team included Joe Kittinger, who first attempted to break the sound barrier from 19.5 miles up in 1960, reaching speed of 614 mph. With Kittinger inside mission control Sunday, the two men could be heard going over technical details during the ascension.
"Our guardian angel will take care of you," Kittinger radioed to Baumgartner around the 100,000-foot mark. Kittinger noted that, it was getting "really serious" now.
An hour into the flight, Baumgartner had ascended more than 63,000 feet and had gone through a trial run of the jump sequence that will send him plummeting toward Earth. Ballast was dropped to speed up the ascent.
Kittinger told him, "Everything is in the green. Doing great."
This attempt marked the end of a five-year road for Baumgartner, a record-setting high-altitude jumper. He already made two preparation jumps in the area, one from 15 miles high and another from 18 miles high. It will also be the end of his extreme altitude jumping career; he has promised this will be his final jump.
The energy drink maker Red Bull, which is sponsoring the feat, has been promoting a live Internet stream of the event from nearly 30 cameras on the capsule, the ground and a helicopter. But organizers said there will be a 20-second delay in their broadcast of footage in case of a tragic accident.
Baumgartner has said he plans to settle down with his girlfriend and fly helicopters on mountain rescue and firefighting missions in the U.S. and Austria.
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