Is the ?missing mass? really missing?

Abstract

We have no experimental evidence for the validity of the inverse square law for gravitation at distances significantly larger than the diameter of the solar system. This raises the very real possibility that the “missing mass” (“dark matter”) may not exist. Instead, the inverse square law may be breaking down at distances of the order of tens of kiloparsecs. I discuss this possibility within the framework of Scalar-Vector-Tensor (SVT) theories of gravity. It appears to be relatively easy to account for up to approximately 10% of the galactic halo dark matter via SVT theories of gravity. With some fine-tuning of parameters, it is conceivable that all of the dark matter can be accounted for in this way.