Tethered galaxies and the expanding space paradigm

Abstract

I examine the counterintuitive claim from Davis et.al. that a stationary or receding galaxy in an expanding universe may exhibit blueshift, even when the universe contains no gravitating matter. I show that with more precise calculations the effect disappears for the empty universe. I also discuss how this is related to the currently popular idea of ‘expanding space’, looking at how this idea arose, and why I think it has serious flaws.