The nature of the galaxy 's bar is also actively debated , with estimates for its half-length and orientation spanning from 3,300 â `` 16,000 light years ( short or a long bar ) and 10 â `` 50 degrees . The nature of the galaxy 's bar is also actively debated , with estimates for its half-length and orientation spanning from 1 t ( short or a long bar ) and 10 â `` 50 degrees .