Did Galileo invent the atomic bomb?
No, of course not. He invented the steam engine.
Albert Einstein did not invent the Atomic Bomb. In 1915 Einstein worked out the equations which made it possible for people to create an Atomic Bomb. In 1938 Heisenberg figured out the engineering which made such a bomb possible. Einstein heard about Heisenberg's work on behalf of Hitler and sent a letter to President Roosevelt warning him about the dangerous nature of such a bomb.