Terms for subject Space containing at

English	Russian
at a galactic scale	в масштабе галактики (space.com Alex_Odeychuk)
at hypervelocity	с высокой гиперзвуковой скоростью (Hypervelocity is very high velocity, approximately over 3,000 meters per second (11,000 km/h or Mach 8.8). Alex_Odeychuk)