How any celestial objects is not rotating on its axis

Some important things which prove that a celestial object is not rotating on its axis

1. Changing shape or variable oblateness

2. Differential rotation

3. Coronal mass ejection(CME)

4. Solar cycle

5. Ejection of matter, radiation and light

6. Length of day

7. Variable rotation period

8. Pole wandering

9. Magnetic field reversal

10. Coriolis force

11. Cyclone and counter-cyclone in both hemispheres

12. Chandler wobble

13. Source of volcano eruption

14. Source of earthquake

15. Continental drift 

16. Plate tectonic

17. Variation in number of sun spots

18. Retrograde orbiting

19. Variation in orbital velocity

20. Structure of a galaxy