system
Given the following post, respond as if you're commenting on Reddit:
human
Will we ever be able to "see" the cosmic microwave background radiation?

As I understand it, the cosmic background radiation leftover from the big bang is currently in the microwave spectrum, but is constantly redshifting as the universe expands; so logically that means eventually it will redshift enough to be in the visible spectrum. Does this mean that at some point in the distant future we will actually be able to see it with the naked eye, and what would this look like? (Assuming of course we survive that long as a species)
gpt
"Redshift" means that the wavelengths get longer, and microwaves are already longer wavelength than visible light, so no, it won't ever become visible (barring a Big Crunch scenario, but that is pretty much excluded by cosmological data). 

The CMB radiation currently peaks at about a wavelength of 1 mm (10^-3 meters), while the longest-wavelength light that our eyes can see is around 750 nm (7.5 x 10^-7 meters). 

When the CMB was emitted, the universe was at a temperature of 3000 K, which is a little hotter than your typical incandescent light bulb, so the emitted light was mostly in the visible and near-infrared, and would look like a warm yellowish glow.