Planet's density
"Richard Tobin" napisał w wiadomości
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In article ,
Szczepan Bialek wrote:
The density of the Earth is 5.52
The Mars has 3.95 and The Moon 3.34
The density of the moon is very similar to that of the earth's mantle,
which is one piece of evidence for the moon having been formed in a
collision between the earth and some other body. The earth retained
its dense metal core and the moon was formed from part of the lighter
outer material.
Mars's density may be due to its having a smaller core than the earth.
We know the GM only. The G (gravitational constant) was mesured by Cavendish
on the Earth surface where is the excess of electrons.
On the Moon is the electrostatic levitation of the dust.
So the G may be incorrect. It is possible that the planets do not have metal
cores.
It would be interested to know the measurements done on the ISS. ISS is a
"planet" which mass is known and not small.
Does ISS attract the cosmonauts or repel them?
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