WASHINGTON, Jan. 28, 2013 /PRNewswire-USNewswire/ -- NASA will pay will tribute to the crews of Apollo 1 and space shuttles Challenger and Columbia, as well as other NASA colleagues, during the agency's Day of Remembrance on Friday, Feb. 1, the 10th anniversary of the Columbia accident. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO ) NASA's Day of Remembrance honors members of the NASA family who lost their lives while furthering the cause of exploration and discovery. Flags across the agency will be flown at half-staff in their memory. NASA Administrator Charles Bolden and other NASA senior officials will hold an observance at the astronaut memorial at Arlington National Cemetery Friday morning. At 10 a.m. EST, NASA Television will provide live coverage of a wreath-laying ceremony at the Space Mirror Memorial located in the Kennedy Space Center Visitor Complex in Florida. The observance is hosted by the Astronauts Memorial Foundation. Ceremony speakers include NASA Associate Administrator Robert Lightfoot; William Gerstenmaier, NASA's associate administrator for human exploration and operations; Robert Cabana, director of NASA's Kennedy Space Center; Thad Altman, president and chief executive officer of the Astronauts Memorial Foundation; Jon McBride, chairman of the board of directors of the Astronauts Memorial Foundation; Mick Ukleja, chairman of the board of trustees of the Astronauts Memorial Foundation; Evelyn Husband-Thompson, widow of Col. Rick Husband, who was commander of space shuttle Columbia's final mission, STS-107, in 2003; and Eileen Collins, commander of shuttle Discovery for the mission in 2005 that returned shuttles to flight after the Columbia accident. The Astronauts Memorial Foundation is a private, not-for-profit organization which built and maintains the Space Mirror Memorial. The mirror was dedicated in 1991 to honor all astronauts who lost their lives on missions or during training. It has been designated a National Memorial by Congress.