* Astronomy

Skydiver hopes to make supersonic jump over NM

Extreme athlete and skydiver Felix Baumgartner hopes to end five years of preparation with a death-defying 23-mile free fall into the southeastern New Mexico desert Tuesday morning.
Weather permitting, the 43-year-old Austrian will take off in a 55-story, ultra-thin and easy-to-tear helium balloon that will take him into the stratosphere for a jump that he hopes will make him the first skydiver to break the sound barrier and shatter three other world records.
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