Ivy Mike's detonation was so powerful that it vaporized the Elugelab Island where it was detonated, leaving in its place a 164-foot-deep crater ... The Tsar Bomba, as the test was ultimately ...

Tsar Bomba was a three-stage device, involving the fusion of hydrogen isotopes. A modified Tu-95 bomber codenamed “Bear” dropped it from the air. On the day the iconic bomb was dropped ...