Cape Canaveral, Fla. -- A NASA Day of Rememberance Friday will honor members of the NASA family who lost their lives while furthering the cause of exploration and discovery.
NASA will pay tribute to the crews of Apollo 1 and space shuttles Challenger and Columbia, as well as other NASA colleagues.
Tributes across the agency include a wreath-laying ceremony at the Space Mirror Memorial and NASA's Ames Research Center at Moffet Field. California will also hold a ceremony at its visitor center.
NASA also is paying tribute to the agency's fallen astronauts with special online content available at: http://go.nasa.gov/1b5Oh9I