Re: Conspiracy Theory- Earth's Expansion

[David Marjanovic <david.marjanovic@gmx.at>]

> Not if the mass remains the same but is packed in a smaller volume.

Too if the mass remains the same but is packed in a smaller volume.

Again: the strength of a field of gravity at any point is Gm/(r^2), where G 
is the universal constant, r is the distance from the center of gravity, and 
m is the mass that generates the field in question. If you pack the same 
mass into a smaller volume, that means m stays constant while r shrinks, and 
this means that Gm is divided by a smaller number.

> ONE
> of the expansionists theories is that the Earth's mass has remained the
> same through time but the Earth has expanded like a balloon from the
> internal heat generated.

Which is of course wrong, because the Earth hasn't heated up. If anything, 
it has cooled down (though probably not steadily).

> The rule of thumb is half the diameter = 4x the surface gravity ... more 
> than enough to affect bone structure in similarly-massed NLR's. Anyone 
> wants to kill (er, I mean test) "expanding Earth", here's is your chance.

No such change in bone microstructures or bone proportions or muscle 
attachment site proportions through time is observed. QED.

Also, if G had ever changed within the last few billion years, the solar 
system would no longer exist, and probably the galaxy wouldn't either.