Just to throw this out there - the scanning range of Earth in the 32nd century is less than that of the USS Voyager in the 2370s.
Saturn is about 7 AU from Earth.
In "Emanations", the USS Voyager did a high-end scanning range with a radius of 10 AU.
In "People of Earth", the USS Discovery landed at the Saturnian system, which lay outside the scanning range of Earth
Saturn is about 7 AU from Earth.
In "Emanations", the USS Voyager did a high-end scanning range with a radius of 10 AU.
In "People of Earth", the USS Discovery landed at the Saturnian system, which lay outside the scanning range of Earth