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This is called "rotation" or "spin".
A planet's rotation on its axis determines the length of its day.
Saturn
Uranus. 17h 14m 24s for one spin on its axis.
It is called rotation.
Rotational Period .
Its rotational period.
This is called "rotation" or "spin".
The rotation of the planet on its axis of spin. The spin is responsible for the day and the night.
Its rotational period.
A day.
what does earth spin on besides a inmaginary line? ============== Planet Earth rotates on its axis.
A planet's rotation on its axis determines the length of its day.
Which planet?
Neptune
They both spin on an axis.
It differs from planet to planet