Galaxies are very, very big relative to planets.
The Andromeda Galaxy – the closest large galaxy to Earth besides our own Milky Way – would be several times the size of the Moon in the sky if it were bright enough for us to see all of it with the naked eye. Pluto, on the other hand, is smaller in the sky than a person a few hundred miles away would be.
That said, we *can* see Pluto in Hubble, much less in the JWST. Just not in very high resolution.
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