  For many years it was felt that, when a star collapsed, a white dwarf
resulted if the mass of the original star was below the Chandrasekhar limit, a
neutron star if the mass was somewhat larger but still less than four or five
solar masses, but after that black holes were felt to provide the only possible
final state. The extension of this hierarchy to include the possibility of
quark, and even sub-quark, stars has been proposed and here is used to offer an
alternative explanation for the recently published photograph, credited to
Eckart and Genzel, purporting to show stars near the centre of our Galaxy
moving at very high speeds. The same basic results are used also to consider
the even more recent results of Schodel and collaborators concerning the
detailed observations of a stellar orbit very close to the centre of our
galaxy.
