[ExI] Double-Earth (Was: kepler study says 8.8e9 earthlike planets)

Kelly Anderson kellycoinguy at gmail.com
Fri Nov 22 09:28:33 UTC 2013


On Wed, Nov 20, 2013 at 5:36 AM, Anders Sandberg <anders at aleph.se> wrote:

> OK, now I have a better writeup:
> http://www.aleph.se/andart/archives/2013/11/greetings_
> from_doubleearth.html


That was an incredibly detailed writeup. Thank you Anders. So if I
understand, the physics of a "twice as large" earth lead to no continents?
Does that assume the same proportion of water as earth was formed from? It
kind of seems like if there were less water for some reason, you still
might get continents, but perhaps I'm missing some rule of thumb that
suggests the ratio of water is similar everywhere???

-Kelly
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