Jan. 24, 2018, 9:59 a.m.
NASA Honors Its Fallen Heroes, Marks 15th Anniversary of Columbia Accident
NASA will pay will tribute to the crews of Apollo 1 and space shuttles Challenger and Columbia, as well as other NASA colleagues who lost their lives while furthering the cause of exploration and discovery, during the agency's annual Day of Remembrance on Thursday, Jan. 25.
