Gaitian theory, Huntian theory, Michelle Ye theory, geocentric theory, BIGBANG theory and Xingyun theory are about constellations.

1: Zhao Shuang's "Zhou Kuaishu's Note" covers the universe system. Therefore, Gaitian theory is also called Zhou heterodox.

2. Huntian theory may have started in the Warring States Period. Qu Yuan's Tian Wen: "Well, it's nine-fold. Who will do it? " The word "er" here is considered by some critics to refer to the celestial sphere. At the end of the Western Han Dynasty, Yang Xiong mentioned the word "Huntian", which is the earliest known record.

It was born between the end of Warring States and the beginning of Eastern Han Dynasty. Miao Meng in the early years of the Eastern Han Dynasty recorded this theory handed down by predecessors.

The origin of geocentric theory is very early, which was originally put forward by Aristotle, an ancient Greek philosopher.

Astronomer Lemaistre believes that the present universe was formed by the explosion of a "primitive atom". This is the predecessor of the big bang theory. American astronomer Gamov accepted and developed.

6. The first scientific theory of nebulae is Kant-Laplace's nebulae theory.