nuclear gravity bomb(The U.S. Is Building a New Nuclear 'Gravity Bomb', Pentagon Announces == The Pentagon has announced it is making a new nuclear “gravity bomb.”
If approved by Congress, the B61-13 will replace the 1980s era B61-7, according to the Friday announcement. The new bomb will have the same yield as the old which is estimated to be 360 kilotons, roughly 24 times bigger than the blast that destroyed Hiroshima. The B61-13 will be a so-called gravity bomb, meaning it works by being pulled to ground by the force of gravity instead of flying to the target on a powered missile. A bomber flies over the target and drops the bomb.'More)
