Yes, there are regions of the universe that we can currently see, but due to the expansion of the universe, there will come a point in the future when we will no longer be able to see them. This is because the space between us and those regions will continue to expand, causing the light from those regions to become increasingly redshifted and eventually fall outside the detectable range of our instruments.

As the universe expands, objects that are currently visible to us will gradually move farther away. The light they emit will experience cosmological redshift and become stretched to longer wavelengths. Eventually, the redshift will be so significant that the light will shift into infrared or even radio wavelengths, making it undetectable to our current telescopes and instruments that primarily observe visible light or shorter wavelengths.

This means that there will be regions in the universe, including distant galaxies and structures, that we can observe now but will eventually become unreachable in terms of observation. It's important to note that this does not mean those regions cease to exist or are destroyed; rather, they become inaccessible to our observational capabilities.
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