SpaceX Falcon 9 Failure Investigation 'Most Difficult' Ever: Musk

CAPE CANAVERAL AIR FORCE STATION, FL - More than a week after the catastrophic launch pad explosion that eviscerated a SpaceX Falcon 9 rocket during a fueling test, the bold and burgeoning aerospace firm is still confounded by the "most difficult and complex failure" in its history, and is asking the public for help in nailing down the elusive cause - says SpaceX CEO and Founder Elon Musk in a new series of tweets, that also seeks the public's help in the complex investigation. "Turning out to b...