Scientists identify 54 'bones of Milky Way's skeleton'
Germany-based researchers have recently identified 54 "bones of the Milky Way galaxy's skeleton", of which 45 had not previously been identified. The cold, dense filaments of gasses dubbed as the galactic "bones", form the building blocks of the galaxy's spiral arms. Ranging from 32-900 light years in length, scientists believe there are more 146 "bones" still undiscovered in the galaxy. 