The order of planets from big to small is sun, Jupiter, Saturn, Uranus, Neptune, Earth, Venus, Mars and Mercury.

Planetary size sorting refers to sorting planets according to their volume and mass. In the universe, there are many kinds of planets with different volumes and masses.

1. Sun

The sun is the central star of the solar system and the largest planet known to mankind. Its powerful gravity controls the motion of all planets and other celestial bodies in the solar system.

2. Jupiter

The mass of the largest planet in the solar system is 2.5 times that of the other seven planets combined.

3. Saturn

The second largest planet in the solar system is about 764 times the size of the earth.

4. Uranus

It is about 63 times the size of the earth.

5. Neptune

It is about 58 times the size of the earth.

6. Earth

The third largest planet in the solar system, its volume is about 6.5438+0.3 million times that of the earth.

7. Venus

It is about the size of the earth, and its volume is about 0.86 times that of the earth.

8. Mars

The volume is about 0. 15 times that of the earth.

9. Mercury

It is the smallest planet in the solar system with an equatorial radius of 2439.7 kilometers.