heaps of people
There is a branch of astronomy called planetary astronomy that takes geology and uses it to examine other planets, so yes rocks are studied in astronomy.
Astronomy
They studied Astronomy.
Sally Ride studied Astronomy and Physical Science.
Astronomy
Astronomy/physics
Astronomy and cosmology.
studied plants
Babylonians.
Archimedes studied astronomy, engineering, mathematics, and war tactics.
Planets, moon, and space
He studied mathematics and astronomy.