Who is the Hulk's alter ego? What is the profession of #1? What do people in #2 have a knowledge of? Is atomic events included in #3?
Hulk
Hulk's alter ego is Dr. Robert Bruce Banner Dr. Robert Bruce Banner is a nuclear physicist.  Nuclear physics is the field of physics that studies atomic nuclei and their constituents and interactions. 
Superhero appearing in Marvel Comics publications and related media
Can Hulk's alter ego explain atomic events?