For some subject areas, this is normal. Everyone who contributed something to the research gets credit. (I think in Physics the authors are listed alphabetical

For some subject areas, this is normal. Everyone who contributed something to the research gets credit. (I think in Physics the authors are listed alphabetically as well.) Contrast that with other areas where people who contributed significant amounts of work towards research often get omitted from the work. I note this from experience as a former academic and being close friends/family with academics.