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Originally Posted by cyberxxx
P.S. Only compression (volume reduction) causes a heat, as well as the expansion (volume enlargement) causes a cold. But not the preasure (force) itself!
This is something that you should learn when you were a schoolboy.
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I did not get a great deal of sleep so maybe I am not explaining it properly.
Basicly wish to know what is the maximum size a rock category planet could be.
There has to be some limit or basic answer without knowing every variable.