Local Hubble Expansion: Current State of the Problem
  We present a brief qualitative overview of the current state of the problem of Hubble expansion at the sufficiently small scales (e.g., in planetary systems or local intergalactic volume). The crucial drawbacks of the available theoretical treatments are emphasized, and the possible ways to avoid them are outlined. Attention is drawn to a number of observable astronomical phenomena that could be naturally explained by the local Hubble expansion. 
Yurii V. Dumin
gr-qc astro-ph.CO astro-ph.EP physics.space-ph