Re: Terraforming Mars <> Europa

JRS:  In article <[EMAIL PROTECTED]>, seen in
news:sci.space.science, Roger Stokes <[EMAIL PROTECTED]> posted at
Sat, 22 Nov 2003 06:26:54 :-

>The mass of Mars is about 6e23 Kg
>the deltaV (mars->jupiter) is about 10 km/sec
>
>Thus the energy needed to move Mars to Jupiter is around 3e31 joules. If
>this is done over 100 years the average power required is around 2e22 watts.
>If the current energy generation capability of the Earth is 1e13 watts (this
>is the bit I'm not sure of), and economic and power growth is constant and
>eternal at 4% per year (the philosophy of capitalism and the cancer cell),
>then by the year 2667 the human race may be willing to spend 1% of it's
>energy resources moving planets.


The Earth maintains ~300K receiving 2e17 W from the Sun.  If the earth
generates and uses 100 * 2e22 W locally, that's 1E7 times as much,
raising the Earth to ~17000K on a T^4 basis.

The Earth should use Solar power, not compete with it.
 
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