Question

what kind of motion do heavenly bodies show : uniform and non-uniform

Answer 1

Heavenly bodies show uniform motion.

It was proposed that the motion of bodies were uniform and were in a circular motion.

Non-uniform motion normally involves state changes.

Heavenly bodies are often moving around the sun in a circular uniform motion.

I hope that this answer is very helpful to you.

Answer 2

Answer:

• The motion of any body is determined by the point of reference that is being taken.  
• When the case of motion of heavenly bodies is considered it is often seen with respect to their movement it with respect to Sun.
• Since with respect to Sun their movement is known that is in circular or rotational motion hence it is considered as uniform.
• For the motion to be non-uniform it should not follow a particular pattern of movement which is just the opposite in case of heavenly bodies hence are uniform.