CAPE CANAVERAL, FL - JANUARY 31: Space shuttle Discovery rolls to the launch pad after emerging from the NASA vehicle assembly building atop a crawler transporter at Kennedy Space Center on January ... more 
CAPE CANAVERAL, FL - JANUARY 31: Space shuttle Discovery rolls to the launch pad after emerging from the NASA vehicle assembly building atop a crawler transporter at Kennedy Space Center on January 31, 2011 in Cape Canaveral, Florida. Discovery is making the 3.4-mile journey to the launch pad in preparation for it's final mission, scheduled for February 24. (Photo by Joe Raedle/Getty Images) less 
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Getty Images | Photo By Joe Raedle / Getty Images
Mon, Jan 31, 2011 9:58 PM EST