The Space Shuttle Challenger disaster occurred on January 28, 1986, when the NASA Space Shuttle orbiter Challenger (OV-099) (mission STS-51-L) broke apart 73 seconds into its flight, leading to the deaths of its seven crew members. (From Wikipedia)
I was in 10th grade at the time sitting in a class when it was announced the shuttle came down. My family has always been big space program supporters and to hear this tragic news was very saddening. Its a brave person who goes into space to explore something outside their comfort zone. Spaceflight still matters and we as humans need to have adventures. These are the heroes of real spaceflight.