Its simply because there are so many mysteries left to solve (Eg:- Europa a moon of Jupiter may harbor life under the ice sheet & our own moon might hold secrets of the earths past as it had collided with the earth as proposed in the large collision theory.
Mainly astronomers. But cosmologists and astrophysicists will also be interested in outer space.
astronomers.
Astronomers Believe That The Solar System Began As A Huge Cloud Of Dust And A Gas Called ''NEBULA''
GEOCENTRIC THEORY You already know as a fact that the Earth and all solar system bodies orbit the Sun but for centuries astronomers believed that the Sun and planets orbited the Earth. To us it looks natural.
The scientists who studies planets or heavenly bodies are astronomers. They study by looking from the telescope at night and recording it. Afterwards, they give the information they've found.
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Astronomers.
Astronomers
Astronomers
astronomers
Many astronomers, historians, regular people, and scientisis know about the planets in our Solar system.
astronomers