  We propose to determine the stellar velocity dispersions of globular clusters
in the outer halo of the Milky Way in order to decide whether the dynamics of
the universe on large scales is governed by dark matter or modified Newtonian
dynamics (MOND). We show that for a number of galactic globular clusters, both
the internal and the external accelerations are significantly below the
critical acceleration parameter $a_0$ of MOND. This leads to velocity
dispersions in case of MOND which exceed their Newtonian counterparts by up to
a factor of 3, providing a stringent test for MOND. Alternatively, in case high
velocity dispersions are found, these would provide the first evidence that
globular clusters are dark matter dominated.
