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CAPE CANAVERAL, Fla. -- Kennedy Space Center Employees and guests placed wreaths and flowers at the Space Mirror Memorial at the spaceport's Visitor Complex during NASA's Day of Remembrance. The annual event took place on the 10th anniversary of the loss of the space shuttle Columbia and its crew and was hosted by the Astronauts Memorial Foundation. The ceremony also honored the astronauts of Apollo 1, who perished in 1967, and the shuttle Challenger, lost in 1986, as well as other astronauts who lost their lives while furthering the cause of exploration and discovery. Dedicated in 1991, the names of fallen astronauts are emblazoned the monument's 4.5-foot-high-by-50-foot-wide polished black granite surface which reflects the sky and has been designated by Congress as a National Memorial. Photo credit: NASA_Tim Jacobs