An astronomer.
a person who studies planets is a planetologist.
An astronomer
astrologist
The person who studies constellations is called an astronomer. Astronomers study celestial objects and phenomena, including stars, planets, and galaxies, using telescopes and other tools to observe and analyze the universe.
A Geologist, Exogeologist, Theoretical Planetologist, and perhaps also an Astronomer
exoplanets
You don't.
An astronomer studies space, including celestial bodies such as planets, stars, and galaxies. They use telescopes and other instruments to observe and analyze the universe.
A huge mass of stars and planets is called a galaxy.
There is a science and a related non-scientific practice:An astronomer is a scientist who observes stars, planets, and other phenomena.An astrologer is a person who determines traits and predicts individual horoscopes based on the positions of the Sun, Moon, stars, and planets.
A person who studies stars as a career is called an astrophysicist or an astronomer. Astrophysicists focus on understanding the physical properties and behaviors of celestial objects, including stars, while astronomers may engage in broader observational studies of the universe. Both fields involve research and analysis of data related to stars and other astronomical phenomena.
Dont know but I think it is called a astronomy