Supersonic turbulence and structure of interstellar molecular clouds
  The interstellar medium (ISM) provides a unique laboratory for highly supersonic, driven hydrodynamics turbulence. We present a theory of such turbulence, confirm it by numerical simulations, and use the results to explain observational properties of interstellar molecular clouds, the regions where stars are born. 
Stanislav Boldyrev, Aake Nordlund, Paolo Padoan