Description
The idea that compact objects are coupled to the expansion of the universe was put forward almost a century ago by McVittie, who introduced a specific metric that, however, exhibits naked singularities. Since then, many authors have attempted to improve the McVittie solution to eliminate the singularity, with limited success. In recent years, the cosmological coupling of compact objects has resurfaced prominently, driven by new theoretical arguments and observations. In this talk, I will offer a brief survey of this topic and present some recent insights.