[TML] AWAD: Sprechenhaltestelle

[Jerry W Barrington]

On 2/3/08 1:05 PM, "Bruce Johnson" <johnson at pharmacy.arizona.edu> wrote:

> 
> On Feb 2, 2008, at 12:45 PM, Brad Murray wrote:
> 
>> The world proper is a small (about 50% standard gravity) water world
>> with a dense but very breathable atmosphere.
> 
> Uhhh, that's pretty self-contradictory, there. I doubt a world with
> 0.5 G is going to have a dense ATM, at least naturally.

Actually, it's not at all.  Compare Earth & Venus.  Almost the same size,
yet Venus's atmosphere is much denser.  *And* it's hotter, meaning light
stuff escapes easier.

Gravity + temperature determine the lightest molecule that will be retained
long-term, not how much of what's kept starts out there.