Anything outside the Earth is astronomy.
Astronomers
the study of stars and planets is colled Astronomy
An astronomer or astrophysicist would study the moon, stars, and planets - of course they may study more than just those.
Yes, they do.
No. Geography is the study of Earth, covering landscapes and environments among others. Astronomy is the study of planets.
Astronomers
Astronomy is the study of planets and stars, among many other things.
Astrology is the study of the influence of stars and planets on your future (and past and present).
Astronomers (and their ilk) study stars and planets.
it is the study of the universe such as planets and stars
Astrology is the study of the influence of stars and planets on your future (and past and present).
exoplanets
You don't.
A huge mass of stars and planets is called a galaxy.
the study of stars and planets is colled Astronomy
An astronomer.
astrology The scientific study of the stars, planets, asteroids etc is Astronomy.