<p>The daughters of Alan Shepard, the first American in space, tell stories about their father during an event to celebrate the anniversary of 50 years of U.S. Human Spaceflight, in Cape Canaveral, Fla., Thursday.</p>
May 6, 2011
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May 6, 2011 9 p.m.
First American in space honored
Alan Shepard blasted into orbit 50 years ago
CAPE CANAVERAL, Fla. - Fifty years to the moment Alan Shepard rocketed away, more than 100 Project Mercury workers joined former astronauts and NASA leaders at the original Redstone launch pad Thursday to celebrate the event that opened space travel to Americans.