challenger

More than a minute after leaving the launch pad, the space shuttle Challenger, one of the pride of American aerospace, exploded in front of millions of people.

Space exploration trips are always very dangerous missions. So far 22 people have sacrificed their lives due to catastrophic accidents in these special missions.

Unless there is a tropical storm, at 11:26 on Friday 8.7 (22:26 PM) will be one of the most sad moments of the year for Americans.

Designed as an astronaut's assistant on a flight to the International Space Station,