I would think maybe astrogeography?

Areography in this case.

Yes. 'Geo', or in modern Greek γη (gi), means earth in the sense of land, not as the planet. Hence 'geology' is literally translated to 'earth/land study'. The science of geology is largely concerned with the structural study of the planet Earth, however it doesn't preclude the study of other celestial/astronomical objects. Geologists, for instance, will be studying data from the samples taken on Mars.