The branch of astronomy that focuses on the study of planets.
astronomy
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.
Measuring the strength of planetary poles, surface navigation, etc.
Astronomy or Planetary Science
Planetary astronomy
Planetary science (and rarely, planetology) is the name given to the scientific discipline of the study of planets. This subdivides into more specific disciplines, including planetary astronomy, planetary geology, and geophysics.
Jurgen Rahe has written: 'Reports of planetary astronomy - 1992' -- subject(s): Satellites, Comets, Asteroids, Astronomy, Planets
The specific study of planets and planetary systems is called planetology.
One of the early "Greats" of astronomy, Keppler developed the Laws of Planetary Motion.
It is part of Kepler's laws of planetary motion.
The German Johannes Kepler and his laws of planetary motion is an important contribution to science and astronomy
Astronomy. !!! Do NOT confuse with 'Astrology' , which deals with future predictions , because of planetary and stellar movements.