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

[Tomaz Kristan]

I guess that a lot of water is a direct consequence of the fact, that the
oxygen is the number 3 most frequent element in the Galaxy. It likely
bounds with the number 1, hydrogen - and there is water. The number three,
helium doesn't bound.

The real problem might be, why the Earth is so dry?


On Fri, Nov 22, 2013 at 10:28 AM, Kelly Anderson <kellycoinguy at gmail.com>wrote:

> 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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