Astronomy is the scientific study of celestial objects. That appear outside of Earth's atmosphere. These include: Planets, Stars, Comets and Galaxies.

Astronomy is one of the few jobs, that are nearly 4000 years old. Almost all Astronomers are also Astrophysicists. All professional Astronomers are both. The most important cahracteristic for a person who wishes to become an Astronomer is a powerful spirit of inquiry.

A really important discovery in Astronomy was when Astronomers discovered that all Stars circle a specific point in the sky. Known as the celestial point. On a normal, and clear night you can see 3000 different stars.

Ancients made a lot of important and valuable discoveries related to the Universe. But they also had their fair share of misunderstandings. The Ancients noted that positions of the Sun, Moon, and Planets change from night to night. Which is correct. But their biggest misunderstanding was thinking that the Moon, Sun, and other Planets orbit a motionless Earth. Religious teachings heavily supported this theory until the late 1600s.

There are a lot of important Astronomical studies. Here's a list of them: Optical Astronomy, X-ray Astronomy, Gamma-ray Astronomy, Ultraviolet Astronomy, Infrared Astronomy, Radio Astronomy, Cosmic-ray Astronomy, Gravitational Astronomy, and Neutrino Astronomy. In total there are 10 different types of Astronomy, including normal Astronomy.

Many people believe that Astronomers get payed a lot of money. However, this is not true.

Discoveries related to the Universe have been made since Human existence. And they'll be continued to be made until Humans walk the Earth.