T.n.t ??
Gadget
big boy
Fat Man
the Manhattan project
Manhattan project
little boy
Little Boy & Fat Man and Gizmo
"Enola Gay" .
It was named the Enola Gay.
The nickname of the American plane that dropped the atomic bomb on Hiroshim, Japan was called the "EnolaGay"
The bomb dropped on Hiroshima was called Fat Man. The bomb dropped on Nagasaki was called Little Boy.
Given the power of modern atomic bombs, it is unlikely that a single atomic bomb could destroy the world. It is doubtful that a single atomic bomb could cause irreparable damage to civilization (given humanity's spread across the planet etc)