1750, the British astronomer Wright (171-1786) published a paper on the Milky Way. Previously, the French mathematician and astronomer Mobody (1698- 1759) talked about "cloud-like stars". Based on the existing scientific knowledge at that time, Kant boldly explored the origin of celestial bodies under the inspiration of predecessors' thoughts.

1754, Kant published a paper on whether the earth's rotation changes and whether the earth will age, which boldly questioned the "theory of cosmic invariance".

1755, Kant published the book General History of Nature and Theory of Celestial Bodies, and put forward the theory of the origin of the solar system for the first time. Kant pointed out in his book that the solar system evolved from nebulae. This nebula consists of solid particles of different sizes. Celestial bodies began to form in the most attractive places. Gravitation makes particles close to each other, and large particles attract small particles to form bigger lumps, which are getting bigger and bigger. The central part with the strongest gravity attracts the most particles and forms the sun first.

The motion of the outer particles falling to the central body under the gravity of the sun changes direction due to the collision of other particles and becomes a circular motion around the sun. These particles orbiting the sun gradually form several centers of gravity and finally condense into planets orbiting the sun. The formation process of satellites is similar to that of planets.