The axis just defines their rotation. It is relative to spin, so if a body does not spin, it has no axis. Kind of an imaginary line, like the equator. It is used for reference. Also an object that is not round and symmetrical and has a length and a width can also be referenced by these dimensions. The Longitudinal axis is usually an axis through the longest dimension of the body.
All of them! Every planet has even the slighest sign of an axis!
Axis i
Here are some sentences.The axis of our planet is tilted.Who were the Axis powers in World War II?
He was axis. He was the enemy of the allied countries.
Axis
optical axis
All of the planets in the Universe rotate on an axis. They all do.
Yes, all 8 planets along with planetesimals like Pluto revolve around and axis.
yes all planets have an axis
Yes. All planets rotate about an axis.
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Each of them does.
Each of them does.
All of them
rotation
rotation
Yes. Any rotating object has an axis of rotation.
Mercury, I think