The literally blasted at the firmament in something called "Fishbowl of the Lord". After Admiral Byrd came back form the south pole, all the world's superpowers decided to start testing nukes straight up. It looked like it was hitting something, hence the mushroom cloud shape. In America, it was called Project Fishbowl. No joke. It was part of Operation Domini... latin for "of the Lord." Makes you wonder if those biblical dummies building an actual tower to heaven were so dumb after all!