| knowledge-database (beta) |
 |
Current group: sci.skeptic
Re: Terraforming the moon, before doing Mars or Venus
| Mike Williams | | Brad Guth | | Fred J. McCall | | Brad Guth |
|
|
| | From: | Mike Williams | | Subject: | Re: Terraforming the moon, before doing Mars or Venus | | Date: | Fri, 21 Jan 2005 21:46:17 +0000 |
|
|
 | Wasn't it Brad Guth who wrote:
>
>If a moon having such a slight gravity and so little solar influx as
>Titan can retain an atmosphere, then certainly the hot and nasty
>prospects for our moon can't be all that far behind.
The escape velocities of the two bodies are reasonably similar, but the
fact that Titan is so cold means that the molecules in its atmosphere
are very much slower than they would be at the temperature of our Moon.
Slow enough, in fact, that most of the molecules stay below Titan's
escape velocity. The Moon is very much hotter than Titan, so if you try
to build an atmosphere there, many of the molecules would exceed lunar
escape velocity and the atmosphere would leak away into space.
--
Mike Williams
Gentleman of Leisure
|
|
| | From: | Brad Guth | | Subject: | Re: Terraforming the moon, before doing Mars or Venus | | Date: | Sat, 22 Jan 2005 01:58:27 +0000 (UTC) |
|
|
| Thanks for the good feedback.
However, only half of our moon gets seriously hot and nasty, whereas the
other half remains downright cold and nasty (though remaining somewhat
insulated because it's within a near vacuum). The shift from being too
hot to getting too cold is somewhat gradual, ideal for solid/vapor phase
changing.
With 1.623 m/s and the greater initial mass of using CO2/Rn should stick
around, even when it gets reasonably hot and nasty, and blown by 600
km/s solar winds.
I can fully appreciate why the likes of those sodium atoms get summarily
excavated away from our moon, but what about the vaporised basalt that
becomes O2 and of those heavier elements?
Regards, Brad Guth / GASA-IEIS
http://guthvenus.tripod.com/gv-topics.htm
--
Posted via Mailgate.ORG Server - http://www.Mailgate.ORG
|
|
| | From: | Fred J. McCall | | Subject: | Re: Terraforming the moon, before doing Mars or Venus | | Date: | Sat, 22 Jan 2005 05:41:57 GMT |
|
|
| "Brad Guth" wrote:
:Thanks for the good feedback.
:
:However, only half of our moon gets seriously hot and nasty, whereas the
:other half remains downright cold and nasty (though remaining somewhat
:insulated because it's within a near vacuum).
Excuse me? Why would that be? Are you implying the Earth's is
tidally locked to the Sun? For that to be true the orbit of the Moon
would have to be perpendicular to the ecliptic.
--
"The reasonable man adapts himself to the world; the unreasonable
man persists in trying to adapt the world to himself. Therefore,
all progress depends on the unreasonable man."
--George Bernard Shaw
|
|
| | From: | Brad Guth | | Subject: | Re: Terraforming the moon, before doing Mars or Venus | | Date: | Sat, 22 Jan 2005 06:59:19 +0000 (UTC) |
|
|
| Mind-Set Correction;
However, only half of our moon gets seriously hot and nasty AT ANY ONE
TIME, whereas the other half remains downright cold and nasty (though
remaining somewhat insulated because it's within a near vacuum).
Why did you intentionally exclude my closing sentence:
"The shift from being too hot to getting too cold is somewhat gradual,
ideal for solid/vapor phase changing."
Wasn't that sufficiently inferring a rather obvious factor of gradual
ROTATION?
Regards, Brad Guth / GASA-IEIS
http://guthvenus.tripod.com/gv-topics.htm
--
Posted via Mailgate.ORG Server - http://www.Mailgate.ORG
|
|
|
| | |
|
 |