NASA, Challenger and Space Shuttle Columbia
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NASA observed its annual Day of Remembrance Thursday to commemorate the astronauts killed in the Apollo 1 and space shuttle Challenger and space shuttle Columbia accidents.
NASA held its annual Day of Remembrance on Thursday to honor those who lost their lives in the pursuit of space exploration.
Dave Reynolds was in second grade at Lakeview Elementary in Roy, Utah, on January 28, 1986, when his teacher wheeled in a TV to watch what was supposed to be a historic moment in space exploration.
NASA's Space Shuttle Program, which ran from 1981 to 2011, was a complex and ambitious project that pushed the boundaries of space exploration, but was marred by two tragic accidents during the shuttle era.
Wednesday marks a somber anniversary in American history. 40 years ago, seven astronauts were killed when Space Shuttle Challenger exploded during liftoff.