5 Secrets Of A Successful Space Dive

Yesterday's 23-mile skydive was delayed by gusty wind, but that's just one variable that can shut down a high-altitude ballooning mission. Many people have tried, and failed, to break Joe Kittinger’s record for the highest skydive in the past. Here’s why it’s so hard to pull off—and why Felix Baumgartner just might do it yet.