Hi, I have only taken two semesters of Physics, so please keep that in mind when answering. Thanks! OK, I have heard of fission and fusion, and I basically understand them. Smash together some mass, and the result is a little bit of missing mass which creates a ton of energy. I have always heard about these processes, but unlike most other topics, I haven't really ever heard about what the opposite process is of each of these. How do you convert energy into mass? I have heard that a person can truly show they understand something by explaining it in simple terms, and I know this sometimes leads to an imperfect explanation, but please don't use terms like Higgs Field or Higgs Boson without a simple explanation of what that means. Sorry if I am asking for too much, but I have asked some of my friends, and they can regurgitate the complex words and terms they have learned, but they haven't been able to really make me understand this. Thanks very much for any help or information.