Testing the pressure sphere
During his eventual ascent to 120,000 feet, Baumgartner will ride in this pressure sphere--seen here in lab tests--in the capsule below the balloon. The sphere, made by Sage Cheshire Aerospace in Lancaster, Calif., will be pressurized to 8 pounds per square inch.
July 5, 2010 6:00 AM PDT
Photo by: Garth Milan for Red Bull Media House
| Caption by: Jonathan Skillings
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