Robert oppenheimer's contributions?

Question

Hey i need help with a project.... i need to know what researches robert oppenheimer did. i Know he did important research in theoretical astrophysics and nuclear physics.... but what did he do EXACTLY?? Thank you so much if you can answer my question :)

Answer 1

A German Scientist that helped create the first atom bomb that the US dropped on Japan

Answer 2

He was in charge of the Manhattan Project in Los Alamos, NM that developed the atomic bomb.