Finding a point in outer space that does not contain any stars or galaxies, often referred to as a "cosmic void," is highly unlikely. The universe is vast and filled with countless galaxies and stars spread across enormous distances. Even in the regions of space considered relatively empty, there will likely still be a few scattered stars or galaxies.
Cosmic voids do exist in the universe, but they are not completely devoid of matter. They are regions with a lower density of galaxies compared to the average density in the universe. Voids form as a result of the large-scale structure of the universe, where matter is distributed in a web-like pattern consisting of clusters, filaments, and voids. The clusters and filaments are regions with a higher concentration of matter, while the voids have lower concentrations.
However, even within these voids, there will still be some galaxies and stars, albeit sparser compared to other regions. Additionally, cosmic voids can still contain other forms of matter, such as dark matter and gas, even if they lack a significant concentration of visible objects.
So, while it is unlikely to find a point in outer space completely devoid of any stars or galaxies, there are regions where their density is significantly lower, forming what we call cosmic voids.