Space Shuttle Challenger disaster, January 28th 1986

The video covers the launch of the 25th space shuttle mission, which ended in tragedy when the Challenger exploded 74 seconds after takeoff due to faulty O-rings. The video pays tribute to the crew, including Christa McAuliffe, and emphasizes the continuation of space exploration.

What event occurred on January 28, 1986, that was described as a day of Great American tragedy?

What caused the explosion of the Challenger Space Shuttle?

Who was Christa McAuliffe and what was her significance in the Challenger mission?

What message was conveyed about the future of space exploration after the Challenger tragedy?

List the names of the seven Challenger heroes mentioned in the text.