There is but a sliver of atmosphere between Earth and Uranus... and all of the atmosphere between sensing apparatus and microbes 90m away. I am curious how moon would look like if there was the atmospheric scattering the entire way there. Or if would even be able to spot Mars / Venus if we had a constant 1 atm the entire way.

How could it be constant 1 atm all the way to the moon. Wouldn't having an atmosphere as thick as 240km mean the pressure on the surface would be much greater than 1 atm?

That is physically impossible, the point was to compare apples to apples. I.E. resolving 1 micrometer at 90 meters through 1atm vs resolving celestial objects through the same medium to compare light scattering effects.