Fortran is still used in Physics. They have a lot of libraries, and they usually have a some program of a previous paper that almost do what they want now, and they know the technology stack, so many physicist are still not planning to change.
(I work with a Physics group. Sometimes I found programs with an old part that still use numbered lines for the "do". We are still trying to get rid of numbered lines ...)
I work for a company working with hydrodynamics (Potential Flow) and all of our main hydro code is written in Fortran and we don;t plan on moving away from it. Its too easy for non-software oriented engineers to write performant code in with a low barrier to entry.
(I work with a Physics group. Sometimes I found programs with an old part that still use numbered lines for the "do". We are still trying to get rid of numbered lines ...)