On January 28, 1986, the Space Shuttle Challenger exploded after it was launched from Kennedy Space Center in Florida in just 73 seconds which claimed the lives of seven astronauts.

Corrections & Clarifications: An earlier version of this story misstated the date of the Space Shuttle Columbia disaster ... tragically exploded into a human lesson. Seven lives disappeared ...

The space agency honored the fallen Challenger crew, as well as other astronauts of Apollo 1 and space shuttle Columbia ... the name of exploration. Safety remains our cornerstone as their ...