Testing Nuclear Artillery
While it was not the highest yield atomic bomb in existence, but the arms race was in high gear at the time. The United States developed a lot of low-yield, short-range nuclear weapons. However, this was the only one that it ever tested. The Upshot-Knothole Grable nuclear weapons test launched an 11-inch projectile that was in the air for 19 seconds on May 25, 1953. Upon its landing, it had a blast radius of 6.2 miles or so. The 15-kiloton bomb had around the same yield that Little Boy had in Hiroshima, but it was much smaller in size.
Testing Nuclear Artillery
Watching The Challenger Explosion
Could you guess what led to those horrible reactions? The unthinkable took place on January 28, 1986. The Space Shuttle Challenger was only 73 seconds into its 10th flight when it fell apart and exploded in the sky. A NASA investigation revealed that the crew was probably alive for a couple of minutes after that and tried to regain control. Christa McAuliffe was a crew member. She was supposed to be the first American teacher in space after she won a contest with more than 11,000 applicants.
Watching The Challenger Explosion
