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Mars Ahead! Orion Test Flight Blasts Off

America's most powerful rocket launched a robotic test version of NASA's Orion deep-space capsule on its first flight on Friday.
The United Launch Alliance Delta 4 rocket carrying NASA's first Orion deep space exploration craft takes off from its launchpad on Dec. 5, 2014 in Cape Canaveral, Fla.
The United Launch Alliance Delta 4 rocket carrying NASA's first Orion deep space exploration craft takes off from its launchpad on Dec. 5, 2014 in Cape Canaveral, Fla. Joe Raedle / Getty Images