Are Leo and the Big Dipper celestial systems?

Celestial system is the floorboard of all galaxies in the universe. The celestial bodies in the universe are all moving, and the moving celestial bodies attract each other and revolve around each other, forming a celestial system.

Gravitation and the eternal motion of celestial bodies maintain their relationship and form a multi-level celestial system. The celestial system has different levels, from low to high, it is the Earth-Moon system, the solar system, the Milky Way, and the total galaxy.

Leo and the Big Dipper do not attract each other and do not orbit each other, so they are not celestial systems.

Extended data:

Turntable structure of celestial body system

The turntable structure of celestial system There are various levels of celestial systems in the universe, and they all have turntable structure.

For example, the Milky Way is a huge diffuse gas cloud with a certain initial angular momentum. The gas cloud gradually contracts under the action of internal gravity.

Because of the conservation of angular momentum, the rotation rate of the gas cloud increases when it contracts to the center of the rotating shaft, so the inertial centrifugal force will inevitably increase, which makes it difficult for the gas cloud to contract further to the rotating shaft. However, when the gas cloud contracts in the direction parallel to the rotation axis, this problem does not exist. Therefore, the Milky Way has evolved into a disk-shaped structure that rotates in one direction.

Baidu Encyclopedia-Celestial System