To mark the 25th anniversary of the Challenger explosion CNN Student News has included a segment about how Christa McAuliffe is still inspiring students today.

CNN also has a three minute video containing footage of the day including the audio transcript of NASA’s communications that day. The video ends with Ronald Reagan speaking to the nation.

Most of us over the age of 30 can remember where we were when we learned that NASA’s Challenger shuttle had exploded. For our students, it’s a lesson in 20th Century history.